CVE-2026-57489
HIGH 8.1FileRise 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.
Severe if exploited (CVSS 8.1), but no known exploitation and low modeled probability. Patch on a normal cadence.
Exploitation likelihood
0.6%chance of exploitation in 30 days · 51st percentile
Impact if exploited
8.1CVSS 3.1 · HIGH
- ConfidentialityHigh
- IntegrityHigh
- AvailabilityHigh
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ✓Privileges: No account or privileges required
- ✓User interaction: No user interaction needed
- ⚠Complexity: Needs a race window or specific setup
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
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Data snapshot:
Weakness (CWE)
- CWE-290: : Authentication Bypass by Spoofing
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References and research data (JSON)
All CVSS metrics
- HIGH 8.1 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - HIGH 8.1 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
Exploit-tagged references (not proof of a PoC)
- https://github.com/error311/FileRise/security/advisories/GHSA-98pg-w3jp-r8fv CVE record · GitHub_M · Updated 2026-10-14T20:16:00.021Z
CVE record · CISA-ADP · Updated 2026-10-20T02:07:03.653Z
NVD · CVE-2026-57489 · Updated 2026-10-20T03:17:15.860
Advisories
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-101634 EUVD · EUVD-2026-101634
Technical & other
- https://github.com/error311/FileRise/commit/f7114ca2a4e624238dda0d097a07ad6b05c11bb6 CVE record · GitHub_M · Updated 2026-10-14T20:16:00.021Z
NVD · CVE-2026-57489 · Updated 2026-10-20T03:17:15.860 - https://github.com/error311/FileRise/releases/tag/v3.16.0 CVE record · GitHub_M · Updated 2026-10-14T20:16:00.021Z
NVD · CVE-2026-57489 · Updated 2026-10-20T03:17:15.860