{ "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-2026-33130", "tracking": { "current_release_date": "2026-03-25T07:26:38.674793Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-33130", "initial_release_date": "2026-03-20T18:28:51.385299Z", "revision_history": [ { "date": "2026-03-20T18:28:51.385299Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-20T18:28:54.364111Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-20T18:29:21.783601Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (3).| CWES updated (1)." }, { "date": "2026-03-20T18:29:26.220203Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-20T21:38:50.385452Z", "number": "5", "summary": "Unknown change." }, { "date": "2026-03-20T21:58:59.174191Z", "number": "6", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-20T21:59:04.172290Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-03-23T12:09:29.498593Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| Products created (1).| References created (4)." }, { "date": "2026-03-23T12:09:33.688152Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-03-24T20:56:49.979376Z", "number": "10", "summary": "Products created (1).| Product Identifiers created (1).| Exploits created (2)." }, { "date": "2026-03-24T20:57:09.935584Z", "number": "11", "summary": "NCSC Score updated." } ], "status": "interim", "version": "11" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<2.2.1", "product": { "name": "vers:unknown/<2.2.1", "product_id": "CSAFPID-5891286" } } ], "category": "product_name", "name": "Uptime Kuma" } ], "category": "vendor", "name": "Open Source" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/>=1.23.0|<2.2.1", "product": { "name": "vers:unknown/>=1.23.0|<2.2.1", "product_id": "CSAFPID-5902895", "product_identification_helper": { "cpe": "cpe:2.3:a:uptime.kuma:uptime_kuma:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Uptime Kuma" } ], "category": "vendor", "name": "Uptime" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/>=1.23.0|<2.2.1", "product": { "name": "vers:unknown/>=1.23.0|<2.2.1", "product_id": "CSAFPID-5874599" } } ], "category": "product_name", "name": "uptime-kuma" } ], "category": "vendor", "name": "louislam" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-33130", "cwe": { "id": "CWE-1336", "name": "Improper Neutralization of Special Elements Used in a Template Engine" }, "notes": [ { "category": "description", "text": "Uptime Kuma is an open source, self-hosted monitoring tool. In versions 1.23.0 through 2.2.0, the fix from GHSA-vffh-c9pq-4crh doesn't fully work to preventServer-side Template Injection (SSTI). The three mitigations added to the Liquid engine (root, relativeReference, dynamicPartials) only block quoted paths. If a project uses an unquoted absolute path, attackers can still read any file on the server. The original fix in notification-provider.js only constrains the first two steps of LiquidJS's file resolution (via root, relativeReference, and dynamicPartials options), but the third step, the require.resolve() fallback in liquid.node.js has no containment check, allowing unquoted absolute paths like /etc/passwd to resolve successfully. Quoted paths happen to be blocked only because the literal quote characters cause require.resolve('\"/etc/passwd\"') to throw a MODULE_NOT_FOUND error, not because of any intentional security measure. This issue has been fixed in version 2.2.1.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33130" }, { "category": "description", "text": "Uptime Kuma is an open source, self-hosted monitoring tool. In versions 1.23.0 through 2.2.0, the fix from GHSA-vffh-c9pq-4crh doesn't fully work to preventServer-side Template Injection (SSTI). The three mitigations added to the Liquid engine (root, relativeReference, dynamicPartials) only block quoted paths. If a project uses an unquoted absolute path, attackers can still read any file on the server. The original fix in notification-provider.js only constrains the first two steps of LiquidJS's file resolution (via root, relativeReference, and dynamicPartials options), but the third step, the require.resolve() fallback in liquid.node.js has no containment check, allowing unquoted absolute paths like /etc/passwd to resolve successfully. Quoted paths happen to be blocked only because the literal quote characters cause require.resolve('\"/etc/passwd\"') to throw a MODULE_NOT_FOUND error, not because of any intentional security measure. This issue has been fixed in version 2.2.1.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33130.json" }, { "category": "other", "text": "0.0003", "title": "EPSS" }, { "category": "other", "text": "4.2", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to an uncommon product vendor, Is related to (a version of) an uncommon product, There is exploit data available from source Nvd", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-5874599", "CSAFPID-5891286", "CSAFPID-5902895" ] }, "references": [ { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33130" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/33xxx/CVE-2026-33130.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0811.json" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://github.com/advisories/GHSA-vffh-c9pq-4crh" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://github.com/louislam/uptime-kuma/releases/tag/2.2.1" }, { "category": "external", "summary": "Reference - certbundde; cveprojectv5; nvd", "url": "https://github.com/louislam/uptime-kuma/security/advisories/GHSA-v832-4r73-wx5j" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0811.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0811" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://euvd.enisa.europa.eu/enisa/EUVD-2026-13670" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-5874599", "CSAFPID-5891286", "CSAFPID-5902895" ] } ], "title": "CVE-2026-33130" } ] }