{"id":"EUVD-2026-13412","revision":null,"records":[{"revision":"4450196c5bfc499a85034090106079f5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-32761","aliases":[],"title":"File Browser has an Authorization Policy Bypass in its Public Share Download Flow","description":"File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Versions 2.61.0 and below contain a permission enforcement bypass which allows users who are denied download privileges (perm.download = false) but granted share privileges (perm.share = true) to exfiltrate file content by creating public share links. While the direct raw download endpoint (/api/raw/) correctly enforces the download permission, the share creation endpoint only checks Perm.Share, and the public download handler (/api/public/dl/<hash>) serves file content without verifying that the original file owner has download permission. This means any authenticated user with share access can circumvent download restrictions by sharing a file and then retrieving it via the unauthenticated public download URL. The vulnerability undermines data-loss prevention and role-separation policies, as restricted users can publicly distribute files they are explicitly blocked from downloading directly. This issue has been fixed in version 2.62.0.","state":0,"publishedAt":"2026-03-19T23:45:33.784+00:00","modifiedAt":"2026-03-21T03:04:15.817+00:00","affected":[{"ecosystem":"Vendor product","name":"filebrowser","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"filebrowser\",\n                    \"product\": \"filebrowser\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.62.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/filebrowser/filebrowser/security/advisories/GHSA-68j5-4m99-w9w9","https://github.com/filebrowser/filebrowser/commit/09a26166b4f79446e7174c017380f6db45444e32","https://github.com/filebrowser/filebrowser/releases/tag/v2.62.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-32761","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-32761","identifiers":["CVE-2026-32761"]},"retained":false,"historicalAffected":[]},{"revision":"a915c121de1f4a36afaacd1f8fd6002a","observedAt":"2026-11-15T09:36:30.409+00:00","statement":{"source":"euvd","id":"EUVD-2026-13412","aliases":["CVE-2026-32761","GHSA-68j5-4m99-w9w9"],"title":"File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Versions 2.61.0 and below contain a permission enforcement bypass which allows users who are denied dow…","description":"File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Versions 2.61.0 and below contain a permission enforcement bypass which allows users who are denied download privileges (perm.download = false) but granted share privileges (perm.share = true) to exfiltrate file content by creating public share links. While the direct raw download endpoint (/api/raw/) correctly enforces the download permission, the share creation endpoint only checks Perm.Share, and the public download handler (/api/public/dl/<hash>) serves file content without verifying that the original file owner has download permission. This means any authenticated user with share access can circumvent download restrictions by sharing a file and then retrieving it via the unauthenticated public download URL. The vulnerability undermines data-loss prevention and role-separation policies, as restricted users can publicly distribute files they are explicitly blocked from downloading directly. 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Versions 2.61.0 and below contain a permission enforcement bypass which allows users who are denied download privileges (perm.download = false) but granted share privileges (perm.share = true) to exfiltrate file content by creating public share links. While the direct raw download endpoint (/api/raw/) correctly enforces the download permission, the share creation endpoint only checks Perm.Share, and the public download handler (/api/public/dl/<hash>) serves file content without verifying that the original file owner has download permission. This means any authenticated user with share access can circumvent download restrictions by sharing a file and then retrieving it via the unauthenticated public download URL. The vulnerability undermines data-loss prevention and role-separation policies, as restricted users can publicly distribute files they are explicitly blocked from downloading directly. This issue has been fixed in version 2.62.0.","state":0,"publishedAt":"2026-03-20T00:16:17.617+00:00","modifiedAt":"2026-06-17T10:36:20.483+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/filebrowser/filebrowser/commit/09a26166b4f79446e7174c017380f6db45444e32","https://github.com/filebrowser/filebrowser/releases/tag/v2.62.0","https://github.com/filebrowser/filebrowser/security/advisories/GHSA-68j5-4m99-w9w9"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-32761","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-284","CWE-639","CWE-863"],"productCriteria":["cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-03-20T00:16:17.617","lastModified":"2026-06-17T10:36:20.483"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-32761","identifiers":["CVE-2026-32761"]},"retained":false,"historicalAffected":[]},{"revision":"3a03440e469a479d9b8da0e646ad4ae3","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-68j5-4m99-w9w9","aliases":["CVE-2026-32761","GO-2026-4738"],"title":"File Browser has an Authorization Policy Bypass in Public Share Download Flow","description":"### Summary\nA permission enforcement flaw allows users without download privileges (`download=false`) to still expose and retrieve file content via public share links when they retain share privileges (`share=true`). This bypasses intended access control policy and enables unauthorized data exfiltration to unauthenticated users. Where download restrictions are used for data-loss prevention or role separation.\n\n### Details\nThe backend applies inconsistent authorization checks across download paths:\n\n- Direct raw download correctly enforces `Perm.Download`:\n  - [[raw.go](https://github.com/filebrowser/filebrowser/blob/master/http/raw.go#82)](filebrowser/http/raw.go:82)\n- Share creation only enforces `Perm.Share`:\n  - [[share.go](https://github.com/filebrowser/filebrowser/blob/master/http/share.go#21)](filebrowser/http/share.go:21)\n- Public share/download handlers serve shared content without verifying owner `Perm.Download`:\n  - [public.go](https://github.com/filebrowser/filebrowser/blob/master/http/public.go#18)(filebrowser/http/public.go:18)\n  - [public.go](https://github.com/filebrowser/filebrowser/blob/master/http/public.go#116)(filebrowser/http/public.go:116)\n\nAs a result, a user who is blocked from direct downloads can create a share and obtain the same file via `/api/public/dl/<hash>`.\n\n### PoC\n\n1. Create a non-admin user with:\n- `perm.share = true`\n- `perm.download = false`\n\n2. Login as that user and upload a **PDF** file:\n- `POST /api/resources/nodl_secret_<rand>.pdf` with `Content-Type: application/pdf`\n\n3. Verify direct raw download is denied:\n- `GET /api/raw/nodl_secret_<rand>.pdf`\n- Expected and observed: `202 Accepted` (blocked)\n\n4. Create share for same file:\n- `POST /api/share/nodl_secret_<rand>.pdf`\n- Observed: `200`, response includes `hash` (example: `qxfK3JMG`)\n\n5. Download publicly without authentication:\n- `GET /api/public/dl/<hash>`\n- Observed (vulnerable): `200`, `Content-Type: application/pdf`, and PDF bytes are returned\n\nLive evidence captured (March 1, 2026):\n- `create user`: `201`\n- `create file`: `200`\n- `direct /api/raw`: `202 Accepted`\n- `create share`: `200`\n- `public download /api/public/dl/mxK-ppZb`: `200`\n- `public download content-type`: `application/pdf`\n- `public download body length`: `327` bytes\n\n### Impact\nThis is an **access control / authorization policy bypass** vulnerability.\n\n- **Who can exploit:** Any authenticated user granted `share=true` but denied `download`.\n- **Who is impacted:** Operators and organizations relying on download restrictions to prevent data export.\n- **What can happen:** Restricted users can still distribute and retrieve files publicly, including unauthenticated access through share URLs.","state":0,"publishedAt":"2026-03-18T12:59:12+00:00","modifiedAt":"2026-09-10T03:50:59.7728195+00:00","affected":[{"ecosystem":"Go","name":"https://github.com/filebrowser/filebrowser","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"last_affected","version":"2.61.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/filebrowser/filebrowser/security/advisories/GHSA-68j5-4m99-w9w9","https://nvd.nist.gov/vuln/detail/CVE-2026-32761","https://github.com/filebrowser/filebrowser/commit/09a26166b4f79446e7174c017380f6db45444e32","https://github.com/filebrowser/filebrowser","https://github.com/filebrowser/filebrowser/releases/tag/v2.62.0"],"sourceUrl":"https://github.com/advisories/GHSA-68j5-4m99-w9w9","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-68j5-4m99-w9w9","identifiers":["GHSA-68j5-4m99-w9w9","CVE-2026-32761","GO-2026-4738"]},"retained":false,"historicalAffected":[]},{"revision":"2e3678b369064915ae9a7b86dde3b305","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-4738","aliases":["CVE-2026-32761","GHSA-68j5-4m99-w9w9"],"title":"File Browser has an Authorization Policy Bypass in Public Share Download Flow in github.com/filebrowser/filebrowser","description":"File Browser has an Authorization Policy Bypass in Public Share Download Flow in github.com/filebrowser/filebrowser","state":0,"publishedAt":"2026-04-07T14:58:41+00:00","modifiedAt":"2026-04-07T15:15:14.304786+00:00","affected":[{"ecosystem":"Go","name":"github.com/filebrowser/filebrowser","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/filebrowser/filebrowser/v2","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"2.62.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/filebrowser/filebrowser/security/advisories/GHSA-68j5-4m99-w9w9","https://github.com/filebrowser/filebrowser/commit/09a26166b4f79446e7174c017380f6db45444e32","https://github.com/filebrowser/filebrowser/releases/tag/v2.62.0"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-4738","license":"OSV · upstream source license applies","key":"osv:GO-2026-4738","identifiers":["GO-2026-4738","CVE-2026-32761","GHSA-68j5-4m99-w9w9"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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