Foxel through 2.4.0 Unauthenticated File Read via /api/fs/stream and /api/fs/thumb
Foxel through 2.4.0 with at least one storage adapter mounted exposes the GET /api/fs/stream and GET /api/fs/thumb routes, which lack login and path permission checks. No vendor rating or fix is listed in the checked facts.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fix or patch referenced
- Who is exposed
- Default setups
Do first: Check every install: default setups are affected.
- Exploitation0/40No signal
- Exposure25/25Default setups, CISA rates it automatable
- Reach?/20Reach: unknown (data gap). No tracked technology or package matched
- Severity8.7/10CVSS 8.7
- No patch0/5No signal
What would change the score
- Would score about 74 if added to CISA KEV
- Would score about 69 if CISA's SSVC rates exploitation active
CVE-2026-121555 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.7 (high) and affects Foxel; a fix or patch is referenced.
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 34/100 · provisional
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Default setups
- Fix
- Fix or patch referenced
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
Foxel, a file management application, is affected by this vulnerability. An unauthenticated attacker can read the contents of files stored across its mounted storage, including full files and thumbnails, bypassing the application's access permission rules.
Read the original 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.
What to do
Check every install: default setups are affected.
Apply the patch listed under Evidence.
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- DrizzleTime Foxel
through 2.4.0
Evidence 6
- Patch
- Report
- Repository
- Repository
- Repository
- Link
Corrections
None so far.
Something wrong on this page? Report an error. Every fix is listed here.
Questions about CVE-2026-121555
Is CVE-2026-121555 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
What does this mean?
Any caller, including an anonymous one with no account, can read the full contents and rendered thumbnails of any file in Foxel's virtual filesystem. A low-privilege user can also read files outside their granted path rules.Source: github.com
Which versions are affected by CVE-2026-121555?
Foxel: through 2.4.0.Source: cve.now feed data
Am I affected, and how do I check?
Foxel version 2.4.0 and earlier, in setups with at least one storage adapter mounted. To check, look at the installed Foxel version and whether any storage adapter is configured.Source: github.com
How do I fix CVE-2026-121555?
The checked facts list no fixed version, so no upgrade target can be named from them. Check the project's release notes for a release after 2.4.0 that addresses these routes.Source: github.com