{ "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-2026-34381", "tracking": { "current_release_date": "2026-04-01T23:01:46.600636Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-34381", "initial_release_date": "2026-03-31T21:26:01.834724Z", "revision_history": [ { "date": "2026-03-31T21:26:01.834724Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)." }, { "date": "2026-03-31T21:26:05.007894Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-31T21:39:14.248577Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| References created (2).| CWES updated (1)." }, { "date": "2026-03-31T21:39:26.627153Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-03-31T23:58:24.212587Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (4).| CWES updated (1)." }, { "date": "2026-03-31T23:58:26.811758Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-04-01T14:40:06.974187Z", "number": "7", "summary": "Unknown change." }, { "date": "2026-04-01T14:40:09.724180Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-04-01T15:12:53.134865Z", "number": "9", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-04-01T15:13:04.509377Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-04-01T23:00:24.474574Z", "number": "11", "summary": "Products created (1).| Product Identifiers created (1).| Exploits created (1)." }, { "date": "2026-04-01T23:00:26.763942Z", "number": "12", "summary": "NCSC Score updated." } ], "status": "interim", "version": "12" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/>=5.0.0|<5.0.8", "product": { "name": "vers:unknown/>=5.0.0|<5.0.8", "product_id": "CSAFPID-5982846", "product_identification_helper": { "cpe": "cpe:2.3:a:admidio:admidio:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Admidio" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/>=5.0.0|<5.0.8", "product": { "name": "vers:unknown/>=5.0.0|<5.0.8", "product_id": "CSAFPID-5969621" } } ], "category": "product_name", "name": "admidio" } ], "category": "vendor", "name": "Admidio" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-34381", "notes": [ { "category": "description", "text": "Admidio is an open-source user management solution. From version 5.0.0 to before version 5.0.8, Admidio relies on adm_my_files/.htaccess to deny direct HTTP access to uploaded documents. The Docker image ships with AllowOverride None in the Apache configuration, which causes Apache to silently ignore all .htaccess files. As a result, any file uploaded to the documents module regardless of the role-based permissions configured in the UI, is directly accessible over HTTP without authentication by anyone who knows the file path. The file path is disclosed in the upload response JSON. This issue has been patched in version 5.0.8.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-34381" }, { "category": "description", "text": "Admidio is an open-source user management solution. From version 5.0.0 to before version 5.0.8, Admidio relies on adm_my_files/.htaccess to deny direct HTTP access to uploaded documents. The Docker image ships with AllowOverride None in the Apache configuration, which causes Apache to silently ignore all .htaccess files. As a result, any file uploaded to the documents module regardless of the role-based permissions configured in the UI, is directly accessible over HTTP without authentication by anyone who knows the file path. The file path is disclosed in the upload response JSON. This issue has been patched in version 5.0.8.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/34xxx/CVE-2026-34381.json" }, { "category": "description", "text": "### Summary\n\nAdmidio relies on `adm_my_files/.htaccess` to deny direct HTTP access to uploaded documents. The Docker image ships with `AllowOverride None` in the Apache configuration, which causes Apache to silently ignore all `.htaccess` files. As a result, any file uploaded to the\ndocuments module regardless of the _role-based_ permissions configured in the UI, is directly accessible over HTTP without authentication by anyone who knows the file path. The file path is disclosed in the upload response JSON.\n\n---\n\n### Root Cause\n\n**File 1: Intended protection (ignored):** \n`adm_my_files/.htaccess`\n```apache\nRequire all denied\n```\n\"imagen\"\n\n**File 2: Apache config that neutralizes it:** \n\n* Command in order to search in Docker container: `docker exec admidio-sec-app cat /etc/apache2/apache2.conf`\n\n`/etc/apache2/apache2.conf` (Docker image)\n```apache\n\n AllowOverride None\n\n```\n\n\"imagen\"\n\n\n`AllowOverride None` instructs Apache to skip `.htaccess` processing entirely, the deny rule never executes. The upload directory is inside the web root at `/opt/app-root/src/adm_my_files/` and returns **HTTP 200** for direct requests.\n\n**File 3: Upload response leaks the direct URL:** `system/file_upload.php`, upload response JSON:\n\n\"imagen\"\n\n```json\n{\n \"files\": [{\n \"name\": \"sensitive_poc.txt\",\n \"url\": \"http://TARGET/adm_my_files/documents_research/TEST-SENSITIVE/sensitive_poc.txt\"\n }]\n}\n```\n\n### Verified PoC\n\n**Step 1: Admin creates a restricted folder (visible only to Administrator role):** \n> `modules/documents-files.php` → permissions set to role `Administrator` only.\n\n\"imagen\"\n\n**Step 2: Admin uploads a file to the restricted folder.** \n> Upload response returns:\n```\nhttp://TARGET/adm_my_files/documents_research/TEST-SENSITIVE/sensitive_poc.txt\n```\n\n\"imagen\"\n\n**Step 3: Unauthenticated request retrieves the file:**\n```bash\ncurl -X GET 'http://TARGET/adm_my_files/documents_research/TEST-SENSITIVE/sensitive_poc.txt'\n# Response: full file contents — no authentication required\n```\n\n\"imagen\"\n\n**Step 4: Confirm folder is role-restricted:**\n```sql\nSELECT fil_name, fol_name, fol_public FROM adm_files JOIN adm_folders ON fil_fol_id = fol_id \nORDER BY fil_id DESC LIMIT 5; -- fol_public = 0, role restricted — yet file is publicly accessible\n```\n---\n\n### Impact\n\n- Any document uploaded to **Admidio** including files restricted to specific roles is publicly accessible via direct HTTP request with no authentication required\n- **Role-based** access control on the documents module is completely bypassed at the filesystem level\n- Sensitive organizational documents (contracts, member data, financial records) are exposed to anyone who can guess or construct the file path\n- The upload API response discloses the direct URL to the uploader, making path enumeration trivial\n\n### Recommended Fix\n\n**Option 1 (preferred): Enable AllowOverride in Apache config:**\n```apache\n\n AllowOverride All\n\n```\n\n**Option 2: Move uploads outside the web root:** \nStore uploaded files in a directory outside `DOCUMENT_ROOT` and serve them exclusively through Admidio's download handler (`modules/documents-files.php?mode=download`), which enforces role checks before serving the file.\n\n**Option 3: Apache-level explicit deny (does not require .htaccess):**\n```apache\n\n Require all denied\n\n```\n> The most robust long-term fix is Option 2 — moving uploads outside the web root eliminates the dependency on Apache configuration correctness entirely.\n\n**Reported by:** Juan Felipe Oz [@JF0x0r](https://x.com/PwnedRar_)\n> [LinkedIn](https://www.linkedin.com/in/juanfelipeoz/)", "title": "github - https://api.github.com/advisories/GHSA-7fh7-8xqm-3g88" }, { "category": "other", "text": "0.00061", "title": "EPSS" }, { "category": "other", "text": "3.6", "title": "NCSC Score" }, { "category": "other", "text": "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-5969621", "CSAFPID-5982846" ] }, "references": [ { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-34381" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/34xxx/CVE-2026-34381.json" }, { "category": "external", "summary": "Source - github", "url": "https://api.github.com/advisories/GHSA-7fh7-8xqm-3g88" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd", "url": "https://github.com/Admidio/admidio/commit/5f770c1ca81a4f6b02136280cd63316a35aabaaf" }, { "category": "external", "summary": "Reference - cveprojectv5; github; nvd", "url": "https://github.com/Admidio/admidio/security/advisories/GHSA-7fh7-8xqm-3g88" }, { "category": "external", "summary": "Reference - github", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34381" }, { "category": "external", "summary": "Reference - github", "url": "https://github.com/advisories/GHSA-7fh7-8xqm-3g88" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 7.5, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-5969621", "CSAFPID-5982846" ] } ], "title": "CVE-2026-34381" } ] }