# CVE-2026-73611

## Summary

- **CVE ID:** CVE-2026-73611
- **Severity:** HIGH
- **CVSS Score:** 7.6 (CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-613
- **Published:** Aug 13, 2026
- **Last Modified:** Aug 14, 2026

## Description

File Browser versions from 2.50.0 through 2.63.21 fail to validate JWT expiration when proxy authentication is configured with a non-default logout page. Attackers with a previously valid token can access protected routes and administrative endpoints indefinitely, and exchange expired tokens for fresh ones via the renewal endpoint.

## Affected Products

- filebrowser — filebrowser (0)

## References

- [CNA](https://github.com/filebrowser/filebrowser/security/advisories/GHSA-v3jv-rmh2-635j)
- [CNA](https://github.com/filebrowser/filebrowser/commit/72faf6dd3c85628e332d3e567124b86708ce2695)
- [CNA](https://www.vulncheck.com/advisories/file-browser-through-jwt-expiration-bypass)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.34%
- **EPSS Percentile:** 26.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._