{"id":"CVE-2026-121555","title":"Foxel through 2.4.0 Unauthenticated File Read via /api/fs/stream and /api/fs/thumb","summary":"Foxel through 2.4.0 contains a missing authentication vulnerability that allows unauthenticated attackers to read files by requesting the /api/fs/stream and /api/fs/thumb endpoints. Attackers can supply a VFS mount prefix and relative pa…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cvssSource":"cna","cwe":["CWE-306"],"vendor":"DrizzleTime","product":"Foxel","affected":["Foxel <= 2.4.0"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-11-03T17:51:37.929301Z"},"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T18:27:48.395Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-121555","references":[{"url":"https://github.com/DrizzleTime/Foxel/issues/152","label":"GitHub Issue #152"},{"url":"https://github.com/DrizzleTime/Foxel"},{"url":"https://github.com/DrizzleTime/Foxel/commit/73d9fa825e1004d37abb7b10faea0cd7f5bcb463","label":"Fix commit"},{"url":"https://github.com/DrizzleTime/Foxel/blob/v2.4.0/domain/virtual_fs/api.py#L164-L182"},{"url":"https://github.com/DrizzleTime/Foxel/blob/v2.4.0/api/routers.py#L31"},{"url":"https://www.vulncheck.com/advisories/foxel-through-2.4.0-unauthenticated-file-read-via-api-fs-stream-and-api-fs-thumb","label":"VulnCheck Advisory: Foxel through 2.4.0 Unauthenticated File Read via /api/fs/stream and /api/fs/thumb"}],"tags":["cve.org"],"epss":0.00579,"epssPercentile":0.47887,"ingestedAt":"2026-11-05T20:33:06.352Z","slug":"CVE-2026-121555","body":"## Overview\n\nFoxel through 2.4.0 contains a missing authentication vulnerability that allows unauthenticated attackers to read files by requesting the /api/fs/stream and /api/fs/thumb endpoints. Attackers can supply a VFS mount prefix and relative path to retrieve full file contents or thumbnails across all mounts, bypassing PathRule permission grants.\n\n## Affected\n\n- `Foxel <= 2.4.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}