CVE-2026-62314: Anubis: Policy bypass via client controlled X-Original-URI header

Severity: medium (CVSS 5.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-15 · updated 2026-10-24
Weakness: CWE-284

Description

Anubis is a Web AI Firewall Utility that challenges users' connections in order to protect upstream resources from scraper bots. From 1.22.0 until 1.26.0-pre1, lib/policy/checker.go PathChecker.Check() trusted the client-controlled X-Original-URI header before matching r.URL.Path, allowing an HTTP client to match default data/common/keep-internet-working.yaml ALLOW rules such as ^/\.well-known/.*$ and bypass the Anubis challenge. This issue is fixed in version 1.26.0-pre1.

Affected products

TecharoHQ anubis: from 1.22.0, < 1.26.0-pre1

References

https://github.com/TecharoHQ/anubis/commit/276b537776b281b1c4e01421435bc03ade3d8fc4
https://github.com/TecharoHQ/anubis/pull/1630
https://github.com/TecharoHQ/anubis/releases/tag/v1.26.0-pre1
https://github.com/TecharoHQ/anubis/security/advisories/GHSA-6wcg-mqvh-fcvg
https://github.com/TecharoHQ/anubis/security/advisories/GHSA-6wcg-mqvh-fcvg

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