Vulnerability · Published Nov 3, 2026 · Assigned by VulnCheck
CVE-2026-121555Foxel through 2.4.0 Unauthenticated File Read via /api/fs/stream and /api/fs/thumb
High 7.5
In plain English
A high-severity missing authentication in Foxel from DrizzleTime. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 52.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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 path to retrieve full file contents or thumbnails across all mounts, bypassing PathRule permission grants.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| DrizzleTime | Foxel | 0 – through 2.4.0 |
Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
References
- GitHub Issue #152 issue-tracking
- https://github.com/DrizzleTime/Foxel product
- Fix commit patch
- https://github.com/DrizzleTime/Foxel/blob/v2.4.0/domain/virtual_fs/api.py#L164-L182 technical-description
- https://github.com/DrizzleTime/Foxel/blob/v2.4.0/api/routers.py#L31 technical-description
- VulnCheck Advisory: Foxel through 2.4.0 Unauthenticated File Read via /api/fs/stream and /api/fs/thumb third-party-advisory