CVE-2026-73611

MEDIUM 6.8

File Browser 2.50.0 through 2.63.21 JWT Expiration Bypass

CVSS Score

6.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-613
Vendor	filebrowser
Product	filebrowser
Published	Aug 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

filebrowser / filebrowser

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

hacdias