What’s Vulnerable › Vulnerabilities

CVE-2026-82238: filebrowser 2.24.0 Race Condition via TUS concurrent PATCH uploads

• Severity: low (CVSS 3.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-28 · updated 2026-09-30
• Weakness: CWE-367

Description

filebrowser from version 2.24.0 contains a race condition in the TUS upload handler that allows authenticated users to write past the declared Upload-Length by sending concurrent PATCH requests. Attackers can send multiple simultaneous PATCH requests at the same offset to bypass length validation, resulting in files that exceed their declared size and triggering completion hooks for oversized uploads.

Affected products

• filebrowser: from 2.24.0 through 2.63.23

References

• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-4r8p-gqj2-mwgm
• https://www.vulncheck.com/advisories/filebrowser-2.24.0-race-condition-via-tus-concurrent-patch-uploads
• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-4r8p-gqj2-mwgm

Get alerted when CVE-2026-82238 or the next vulnerability affects your stack