Vulnerability · Published Oct 14, 2026 · Assigned by GitHub_M

CVE-2026-57489FileRise: AUTH_BYPASS reverse-proxy header trust without source IP validation enables full authentication bypass

High 8.1

In plain English

A high-severity authentication bypass by spoofing in FileRise from error311. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)0.6%top 48.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.16.0, FileRise deployments with AUTH_BYPASS enabled trust the configured reverse-proxy identity header without verifying that the request originated from FR_TRUSTED_PROXIES. When the backend application port is reachable directly, an unauthenticated attacker can supply X-Remote-User and obtain a session for the asserted account, including an administrator account, without a password or MFA. The flaw is limited to deployments that enable proxy-header authentication and expose an untrusted path to the backend. This issue is fixed in version 3.16.0.

Affected products (as reported)

Vendor	Product	Versions
error311	FileRise	< 3.16.0

Weakness: CWE-290 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/error311/FileRise/security/advisories/GHSA-98pg-w3jp-r8fv x_refsource_CONFIRM
https://github.com/error311/FileRise/commit/f7114ca2a4e624238dda0d097a07ad6b05c11bb6 x_refsource_MISC
https://github.com/error311/FileRise/releases/tag/v3.16.0 x_refsource_MISC