{"items":[{"id":"NVI-00016048","kind":"vulnerability","title":"File Browser has incorrect access control for public directory shares via rule path rebasing","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-j9jx-hp4c-ghhh","CVE-2026-54091"],"plain_summary":"GitHub lists this reviewed advisory for github.com/filebrowser/filebrowser/v2. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-00a9eb0cad7ecadbee52f3075fac5a85"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-21T14:43:25.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0ea41950b4d83310a1ba672d69147f3d"},{"kind":"CVSS","as_of":"2026-06-26T19:16:42.673Z","value":"7.5 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-3bb255ce498795977dc3cb5319f9fb60"},{"kind":"EPSS","as_of":"2026-11-05T12:03:04.000Z","value":"0.516%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.44068. Missing scores are unknown.","source_id":"sr-00a9eb0cad7ecadbee52f3075fac5a85"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-0ea41950b4d83310a1ba672d69147f3d","url":"https://github.com/advisories/GHSA-j9jx-hp4c-ghhh","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-j9jx-hp4c-ghhh","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:34:49.300Z"},{"id":"sr-3bb255ce498795977dc3cb5319f9fb60","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54091","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-54091","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T01:48:12.360Z"},{"id":"sr-00a9eb0cad7ecadbee52f3075fac5a85","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-54091","publisher":"FIRST EPSS","observed_at":"2026-11-06T07:17:46.383Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0ea41950b4d83310a1ba672d69147f3d"],"technology":"github.com/filebrowser/filebrowser/v2","known_exclusions":[],"conditions_summary":"### Summary\nFile Browser's public share handlers rebase the share owner's filesystem root to the shared directory and then evaluate descendant paths against the owner's global and per-user rules using the rebased relative path instead of the original path relative to the owner's scope.\n\nAs a result, an attacker who knows a public directory share URL can access files and subdirectories that the owner explicitly blocked with rules, as long as those blocked paths are located underneath the shared directory. In the simplest case this is an unauthenticated information disclosure through `GET /api/public/share/*` and `GET /api/public/dl/*`.\n\n### Details\nThe public share flow first resolves the original shared path under the owner's filesystem, but then switches `d.user.Fs` to a new `BasePathFs` rooted at the shared directory. The follow-up authorization check is still performed by `d.Check`, which compares the request path to rule strings using prefix matching.\n\nWhen the share target is a directory, the path passed to `d.Check` becomes relative to the shared directory, while the rules remain relative to the owner's original scope. A deny rule such as `/projects/private` therefore no long","public_affected_ranges":["<= 2.63.5"]}],"null_published_at":"2026-11-08T19:53:44.050Z","source_updated_at":"2026-07-21T14:43:25.000Z","source_disclosed_at":"2026-06-12T21:53:28.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-03T22:34:49.300Z"},{"id":"NVI-00016048","kind":"vulnerability","title":"File Browser has incorrect access control for public directory shares via rule path rebasing","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-j9jx-hp4c-ghhh","CVE-2026-54091"],"plain_summary":"GitHub lists this reviewed advisory for github.com/filebrowser/filebrowser/v2. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-00a9eb0cad7ecadbee52f3075fac5a85"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-21T14:43:25.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0ea41950b4d83310a1ba672d69147f3d"},{"kind":"EPSS","as_of":"2026-11-05T12:03:04.000Z","value":"0.516%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.44068. Missing scores are unknown.","source_id":"sr-00a9eb0cad7ecadbee52f3075fac5a85"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-0ea41950b4d83310a1ba672d69147f3d","url":"https://github.com/advisories/GHSA-j9jx-hp4c-ghhh","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-j9jx-hp4c-ghhh","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:34:49.300Z"},{"id":"sr-00a9eb0cad7ecadbee52f3075fac5a85","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-54091","publisher":"FIRST EPSS","observed_at":"2026-11-06T07:17:46.383Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0ea41950b4d83310a1ba672d69147f3d"],"technology":"github.com/filebrowser/filebrowser/v2","known_exclusions":[],"conditions_summary":"### Summary\nFile Browser's public share handlers rebase the share owner's filesystem root to the shared directory and then evaluate descendant paths against the owner's global and per-user rules using the rebased relative path instead of the original path relative to the owner's scope.\n\nAs a result, an attacker who knows a public directory share URL can access files and subdirectories that the owner explicitly blocked with rules, as long as those blocked paths are located underneath the shared directory. In the simplest case this is an unauthenticated information disclosure through `GET /api/public/share/*` and `GET /api/public/dl/*`.\n\n### Details\nThe public share flow first resolves the original shared path under the owner's filesystem, but then switches `d.user.Fs` to a new `BasePathFs` rooted at the shared directory. The follow-up authorization check is still performed by `d.Check`, which compares the request path to rule strings using prefix matching.\n\nWhen the share target is a directory, the path passed to `d.Check` becomes relative to the shared directory, while the rules remain relative to the owner's original scope. A deny rule such as `/projects/private` therefore no long","public_affected_ranges":["<= 2.63.5"]}],"null_published_at":"2026-11-07T07:07:42.509Z","source_updated_at":"2026-07-21T14:43:25.000Z","source_disclosed_at":"2026-06-12T21:53:28.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-11-03T22:34:49.300Z"},{"id":"NVI-00016048","kind":"vulnerability","title":"File Browser has incorrect access control for public directory shares via rule path rebasing","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-j9jx-hp4c-ghhh","CVE-2026-54091"],"plain_summary":"GitHub lists this reviewed advisory for github.com/filebrowser/filebrowser/v2. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-0ea41950b4d83310a1ba672d69147f3d"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-21T14:43:25.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0ea41950b4d83310a1ba672d69147f3d"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-0ea41950b4d83310a1ba672d69147f3d","url":"https://github.com/advisories/GHSA-j9jx-hp4c-ghhh","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-j9jx-hp4c-ghhh","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:34:49.300Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0ea41950b4d83310a1ba672d69147f3d"],"technology":"github.com/filebrowser/filebrowser/v2","known_exclusions":[],"conditions_summary":"### Summary\nFile Browser's public share handlers rebase the share owner's filesystem root to the shared directory and then evaluate descendant paths against the owner's global and per-user rules using the rebased relative path instead of the original path relative to the owner's scope.\n\nAs a result, an attacker who knows a public directory share URL can access files and subdirectories that the owner explicitly blocked with rules, as long as those blocked paths are located underneath the shared directory. In the simplest case this is an unauthenticated information disclosure through `GET /api/public/share/*` and `GET /api/public/dl/*`.\n\n### Details\nThe public share flow first resolves the original shared path under the owner's filesystem, but then switches `d.user.Fs` to a new `BasePathFs` rooted at the shared directory. The follow-up authorization check is still performed by `d.Check`, which compares the request path to rule strings using prefix matching.\n\nWhen the share target is a directory, the path passed to `d.Check` becomes relative to the shared directory, while the rules remain relative to the owner's original scope. A deny rule such as `/projects/private` therefore no long","public_affected_ranges":["<= 2.63.5"]}],"null_published_at":"2026-11-04T10:04:27.870Z","source_updated_at":"2026-07-21T14:43:25.000Z","source_disclosed_at":"2026-06-12T21:53:28.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-03T22:34:49.300Z"}],"next_cursor":null,"snapshot_revision":"42594"}