{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-30247", "tracking": { "current_release_date": "2026-03-26T01:25:30.630119Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-30247", "initial_release_date": "2026-03-05T22:48:51.114793Z", "revision_history": [ { "date": "2026-03-05T22:48:51.114793Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-05T22:49:04.335053Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-06T00:12:43.621020Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (1).| CWES updated (1)." }, { "date": "2026-03-06T14:47:40.365542Z", "number": "4", "summary": "CVSS updated." }, { "date": "2026-03-06T14:47:45.654526Z", "number": "5", "summary": "NCSC Score updated." }, { "date": "2026-03-06T18:12:36.734686Z", "number": "6", "summary": "CVSS updated." }, { "date": "2026-03-07T04:24:39.068219Z", "number": "7", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)." }, { "date": "2026-03-07T04:24:48.828620Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-03-07T04:38:47.584566Z", "number": "9", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (1).| CWES updated (1)." }, { "date": "2026-03-07T04:38:50.142926Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-03-07T11:35:25.166911Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-03-07T14:46:46.785070Z", "number": "12", "summary": "Source created.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-07T14:46:59.514910Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-03-09T13:39:53.618319Z", "number": "14", "summary": "Description removed for source.| Description created for source.| References created (1)." }, { "date": "2026-03-09T18:12:45.137334Z", "number": "15", "summary": "Description removed for source.| Description created for source.| References created (1)." }, { "date": "2026-03-09T18:12:47.669847Z", "number": "16", "summary": "NCSC Score updated." }, { "date": "2026-03-09T21:39:23.977490Z", "number": "17", "summary": "Unknown change." }, { "date": "2026-03-11T19:25:05.158363Z", "number": "18", "summary": "Products connected (1).| Product Identifiers created (1).| Exploits created (1)." }, { "date": "2026-03-11T19:25:09.337426Z", "number": "19", "summary": "NCSC Score updated." }, { "date": "2026-03-20T09:34:32.462581Z", "number": "20", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-20T09:34:35.181221Z", "number": "21", "summary": "NCSC Score updated." }, { "date": "2026-03-25T18:14:27.509273Z", "number": "22", "summary": "Source created.| CVE status created. (valid)| Description created for source.| References created (1)." }, { "date": "2026-03-25T18:14:28.993917Z", "number": "23", "summary": "NCSC Score updated." }, { "date": "2026-03-25T21:41:59.809998Z", "number": "24", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (18).| References created (3).| CWES updated (1)." } ], "status": "interim", "version": "24" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<0.2.12", "product": { "name": "vers:unknown/<0.2.12", "product_id": "CSAFPID-5768567" } }, { "category": "product_version_range", "name": "vers:unknown/>=0|<0.2.12", "product": { "name": "vers:unknown/>=0|<0.2.12", "product_id": "CSAFPID-5764022" } } ], "category": "product_name", "name": "WeKnora" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<0.2.12", "product": { "name": "vers:unknown/<0.2.12", "product_id": "CSAFPID-5772003", "product_identification_helper": { "cpe": "cpe:2.3:a:tencent:weknora:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/v0.1.0", "product": { "name": "vers:unknown/v0.1.0", "product_id": "CSAFPID-5364807" } }, { "category": "product_version_range", "name": "vers:unknown/v0.1.1", "product": { "name": "vers:unknown/v0.1.1", "product_id": "CSAFPID-5364808" } }, { "category": "product_version_range", "name": "vers:unknown/v0.1.2", "product": { "name": "vers:unknown/v0.1.2", "product_id": "CSAFPID-5364809" } }, { "category": "product_version_range", "name": "vers:unknown/v0.1.3", "product": { "name": "vers:unknown/v0.1.3", "product_id": "CSAFPID-5364810" } }, { "category": "product_version_range", "name": "vers:unknown/v0.1.5", "product": { "name": "vers:unknown/v0.1.5", "product_id": "CSAFPID-5364811" } }, { "category": "product_version_range", "name": "vers:unknown/v0.1.6", "product": { "name": "vers:unknown/v0.1.6", "product_id": "CSAFPID-5364812" } }, { "category": "product_version_range", "name": "vers:unknown/v0.2.0", "product": { "name": "vers:unknown/v0.2.0", "product_id": "CSAFPID-5364813" } }, { "category": "product_version_range", "name": "vers:unknown/v0.2.1", "product": { "name": "vers:unknown/v0.2.1", "product_id": "CSAFPID-5364814" } }, { "category": "product_version_range", "name": "vers:unknown/v0.2.10", "product": { "name": "vers:unknown/v0.2.10", "product_id": "CSAFPID-5909251" } }, { "category": "product_version_range", "name": "vers:unknown/v0.2.11", "product": { "name": "vers:unknown/v0.2.11", "product_id": "CSAFPID-5909252" } }, { "category": "product_version_range", "name": "vers:unknown/v0.2.2", "product": { "name": "vers:unknown/v0.2.2", "product_id": "CSAFPID-5364815" } }, { "category": "product_version_range", "name": "vers:unknown/v0.2.3", "product": { "name": "vers:unknown/v0.2.3", "product_id": "CSAFPID-5364816" } }, { "category": "product_version_range", "name": "vers:unknown/v0.2.4", "product": { "name": "vers:unknown/v0.2.4", "product_id": "CSAFPID-5364817" } }, { "category": "product_version_range", "name": "vers:unknown/v0.2.5", "product": { "name": "vers:unknown/v0.2.5", "product_id": "CSAFPID-5909253" } }, { "category": "product_version_range", "name": "vers:unknown/v0.2.6", "product": { "name": "vers:unknown/v0.2.6", "product_id": "CSAFPID-5909254" } }, { "category": "product_version_range", "name": "vers:unknown/v0.2.7", "product": { "name": "vers:unknown/v0.2.7", "product_id": "CSAFPID-5909255" } }, { "category": "product_version_range", "name": "vers:unknown/v0.2.8", "product": { "name": "vers:unknown/v0.2.8", "product_id": "CSAFPID-5909256" } }, { "category": "product_version_range", "name": "vers:unknown/v0.2.9", "product": { "name": "vers:unknown/v0.2.9", "product_id": "CSAFPID-5909257" } } ], "category": "product_name", "name": "weknora" } ], "category": "vendor", "name": "Tencent" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-30247", "cwe": { "id": "CWE-918", "name": "Server-Side Request Forgery (SSRF)" }, "notes": [ { "category": "description", "text": "WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.2.12, the application's \"Import document via URL\" feature is vulnerable to Server-Side Request Forgery (SSRF) through HTTP redirects. While the backend implements comprehensive URL validation (blocking private IPs, loopback addresses, reserved hostnames, and cloud metadata endpoints), it fails to validate redirect targets. An attacker can bypass all protections by using a redirect chain, forcing the server to access internal services. Additionally, Docker-specific internal addresses like host.docker.internal are not blocked. This issue has been patched in version 0.2.12.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-30247" }, { "category": "description", "text": "WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.2.12, the application's \"Import document via URL\" feature is vulnerable to Server-Side Request Forgery (SSRF) through HTTP redirects. While the backend implements comprehensive URL validation (blocking private IPs, loopback addresses, reserved hostnames, and cloud metadata endpoints), it fails to validate redirect targets. An attacker can bypass all protections by using a redirect chain, forcing the server to access internal services. Additionally, Docker-specific internal addresses like host.docker.internal are not blocked. This issue has been patched in version 0.2.12.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-30247" }, { "category": "description", "text": "### Summary\n\nThe application's \"Import document via URL\" feature is vulnerable to Server-Side Request Forgery (SSRF) through HTTP redirects. While the backend implements comprehensive URL validation (blocking private IPs, loopback addresses, reserved hostnames, and cloud metadata endpoints), it **fails to validate redirect targets**. An attacker can bypass all protections by using a redirect chain, forcing the server to access internal services. Additionally, Docker-specific internal addresses like `host.docker.internal` are not blocked.\n\n### Details\n\nThe `/api/v1/knowledge-bases/{id}/knowledge/url` endpoint validates the initial URL but follows HTTP redirects without re-validating the destination. This allows attackers to:\n1. Submit a URL to an attacker-controlled domain (passes validation)\n2. Have that domain respond with a 307 redirect to an internal service\n3. The backend automatically follows the redirect without checking if the destination is restricted\n4. The internal service response is exposed to the attacker\n\n### Validation Gaps\n- The `IsSSRFSafeURL()` function (in `internal/utils/security.go`) validates the initial URL thoroughly, but there's no validation of HTTP redirect targets\n- `host.docker.internal` is not in the `restrictedHostnames` list\n- Docker-specific IP ranges (172.17.0.0/16 for bridge networks) are not explicitly blocked\n- The code validates `parsed.Hostname()` from the initial URL, but redirect Location headers bypass this check\n\n### Root Cause Analysis\nThe backend makes the security mistake of trusting the server's HTTP client library to be secure. In Go, when using http.Get() or similar functions, the standard library will automatically follow redirects up to 10 times by default. The SSRF validation only checks the URL passed to the endpoint, not intermediate redirects.\n\n### PoC\n\n**Step 1**: Set up an attacker-controlled server that responds with a redirect:\n\n```http\nHTTP/1.1 307 Temporary Redirect\nLocation: http://host.docker.internal:7777\nContent-Type: text/html\nAccess-Control-Allow-Origin: *\n```\n**Step 2**: Send the request with a clean URL:\n\n```http\nPOST /api/v1/knowledge-bases/dbadd153-9e60-4213-9553-9f78dbcba0dc/knowledge/url HTTP/1.1\nHost: localhost\nContent-Type: application/json\nAuthorization: Bearer \n\n{\"url\":\"https://attacker-domain.com\",\"tag_id\":\"\"}\n```\n\nThe URL `https://attacker-domain.com` passes all validation checks because:\n✓ Valid `https://` scheme\n✓ Not an IP address (it's a domain)\n✓ Not in restricted hostnames\n✓ Doesn't resolve to a private IP (assuming attacker controls a public domain)\n\n**Step 3**: The backend's HTTP client follows the redirect to `http://host.docker.internal:7777`, which:\n✗ Is not validated\n✗ `host.docker.internal` is not in the blocklist\n✗ Successfully accesses the internal service\n\n### Impact\n\nVulnerability Type: Server-Side Request Forgery (SSRF) via HTTP Redirect\n\n**Who is Impacted**:\n- The organization running the application\n- Internal services and databases accessible from the application container\n- Services in the Docker network (other containers, internal infrastructure)\n- Sensitive data stored in internal services\n\n**Potential Consequences**:\n- Access to internal databases (PostgreSQL, MongoDB, MySQL) running in Docker\n- Information disclosure from internal services (Redis cache, configuration servers)\n- Access to Docker container metadata and environment variables\n- Lateral movement to other containers in the same Docker network\n- Exfiltration of sensitive configuration, API keys, or database credentials\n- Potential RCE if internal services have exploitable vulnerabilities", "title": "github - https://github.com/advisories/GHSA-595m-wc8g-6qgc" }, { "category": "description", "text": "### Summary\n\nThe application's \"Import document via URL\" feature is vulnerable to Server-Side Request Forgery (SSRF) through HTTP redirects. While the backend implements comprehensive URL validation (blocking private IPs, loopback addresses, reserved hostnames, and cloud metadata endpoints), it **fails to validate redirect targets**. An attacker can bypass all protections by using a redirect chain, forcing the server to access internal services. Additionally, Docker-specific internal addresses like `host.docker.internal` are not blocked.\n\n### Details\n\nThe `/api/v1/knowledge-bases/{id}/knowledge/url` endpoint validates the initial URL but follows HTTP redirects without re-validating the destination. This allows attackers to:\n1. Submit a URL to an attacker-controlled domain (passes validation)\n2. Have that domain respond with a 307 redirect to an internal service\n3. The backend automatically follows the redirect without checking if the destination is restricted\n4. The internal service response is exposed to the attacker\n\n### Validation Gaps\n- The `IsSSRFSafeURL()` function (in `internal/utils/security.go`) validates the initial URL thoroughly, but there's no validation of HTTP redirect targets\n- `host.docker.internal` is not in the `restrictedHostnames` list\n- Docker-specific IP ranges (172.17.0.0/16 for bridge networks) are not explicitly blocked\n- The code validates `parsed.Hostname()` from the initial URL, but redirect Location headers bypass this check\n\n### Root Cause Analysis\nThe backend makes the security mistake of trusting the server's HTTP client library to be secure. In Go, when using http.Get() or similar functions, the standard library will automatically follow redirects up to 10 times by default. The SSRF validation only checks the URL passed to the endpoint, not intermediate redirects.\n\n### PoC\n\n**Step 1**: Set up an attacker-controlled server that responds with a redirect:\n\n```http\nHTTP/1.1 307 Temporary Redirect\nLocation: http://host.docker.internal:7777\nContent-Type: text/html\nAccess-Control-Allow-Origin: *\n```\n**Step 2**: Send the request with a clean URL:\n\n```http\nPOST /api/v1/knowledge-bases/dbadd153-9e60-4213-9553-9f78dbcba0dc/knowledge/url HTTP/1.1\nHost: localhost\nContent-Type: application/json\nAuthorization: Bearer \n\n{\"url\":\"https://attacker-domain.com\",\"tag_id\":\"\"}\n```\n\nThe URL `https://attacker-domain.com` passes all validation checks because:\n✓ Valid `https://` scheme\n✓ Not an IP address (it's a domain)\n✓ Not in restricted hostnames\n✓ Doesn't resolve to a private IP (assuming attacker controls a public domain)\n\n**Step 3**: The backend's HTTP client follows the redirect to `http://host.docker.internal:7777`, which:\n✗ Is not validated\n✗ `host.docker.internal` is not in the blocklist\n✗ Successfully accesses the internal service\n\n### Impact\n\nVulnerability Type: Server-Side Request Forgery (SSRF) via HTTP Redirect\n\n**Who is Impacted**:\n- The organization running the application\n- Internal services and databases accessible from the application container\n- Services in the Docker network (other containers, internal infrastructure)\n- Sensitive data stored in internal services\n\n**Potential Consequences**:\n- Access to internal databases (PostgreSQL, MongoDB, MySQL) running in Docker\n- Information disclosure from internal services (Redis cache, configuration servers)\n- Access to Docker container metadata and environment variables\n- Lateral movement to other containers in the same Docker network\n- Exfiltration of sensitive configuration, API keys, or database credentials\n- Potential RCE if internal services have exploitable vulnerabilities", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-595m-wc8g-6qgc.json?alt=media" }, { "category": "description", "text": "WeKnora is Vulnerable to SSRF via Redirection in github.com/Tencent/WeKnora", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGO-2026-4628.json?alt=media" }, { "category": "description", "text": "WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.2.12, the application's \"Import document via URL\" feature is vulnerable to Server-Side Request Forgery (SSRF) through HTTP redirects. While the backend implements comprehensive URL validation (blocking private IPs, loopback addresses, reserved hostnames, and cloud metadata endpoints), it fails to validate redirect targets. An attacker can bypass all protections by using a redirect chain, forcing the server to access internal services. Additionally, Docker-specific internal addresses like host.docker.internal are not blocked. This issue has been patched in version 0.2.12.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-30247.json?alt=media" }, { "category": "other", "text": "0.00041", "title": "EPSS" }, { "category": "other", "text": "3.8", "title": "NCSC Score" }, { "category": "other", "text": "Exploit code publicly available, There is exploit data available from source Nvd", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5764022", "CSAFPID-5768567", "CSAFPID-5772003", "CSAFPID-5364807", "CSAFPID-5364808", "CSAFPID-5364809", "CSAFPID-5364810", "CSAFPID-5364811", "CSAFPID-5364812", "CSAFPID-5364813", "CSAFPID-5364814", "CSAFPID-5364815", "CSAFPID-5364816", "CSAFPID-5364817", "CSAFPID-5909251", "CSAFPID-5909252", "CSAFPID-5909253", "CSAFPID-5909254", "CSAFPID-5909255", "CSAFPID-5909256", "CSAFPID-5909257" ] }, "references": [ { "category": "external", "summary": "Source - github", "url": "https://github.com/advisories/GHSA-595m-wc8g-6qgc" }, { "category": "external", "summary": "Source raw - github", "url": "https://api.github.com/advisories/GHSA-595m-wc8g-6qgc" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGHSA-595m-wc8g-6qgc.json?alt=media" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-30247" }, { "category": "external", "summary": "Source raw - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-30247" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-30247" }, { "category": "external", "summary": "Source raw - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/30xxx/CVE-2026-30247.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-30247" }, { "category": "external", "summary": "Source raw - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/Go%2FGO-2026-4628.json?alt=media" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-30247.json?alt=media" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd; osv", "url": "https://github.com/Tencent/WeKnora/security/advisories/GHSA-595m-wc8g-6qgc" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-595m-wc8g-6qgc" }, { "category": "external", "summary": "Reference - github; osv", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-30247" }, { "category": "external", "summary": "Reference - osv", "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30247.json" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 5.9, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-5364807", "CSAFPID-5364808", "CSAFPID-5364809", "CSAFPID-5364810", "CSAFPID-5364811", "CSAFPID-5364812", "CSAFPID-5364813", "CSAFPID-5364814", "CSAFPID-5364815", "CSAFPID-5364816", "CSAFPID-5364817", "CSAFPID-5764022", "CSAFPID-5768567", "CSAFPID-5772003", "CSAFPID-5909251", "CSAFPID-5909252", "CSAFPID-5909253", "CSAFPID-5909254", "CSAFPID-5909255", "CSAFPID-5909256", "CSAFPID-5909257" ] } ], "title": "CVE-2026-30247" } ] }