CVE-2026-82466: Rodauth before 2.46.0 Authentication Bypass via webauthn_login

Severity: high (CVSS 8.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-29 · updated 2026-09-11
Weakness: CWE-287

Description

Rodauth before 2.46.0 contains an authentication bypass vulnerability in the webauthn_login route that allows logged-in users to authenticate as any other account. Attackers can exploit improper account resolution logic that falls back to session account identifiers instead of validating the credential binding to complete authentication as arbitrary users.

Affected products

jeremyevans rodauth: before 2.46.0 — fixed in 2.46.0

How to fix

Upgrade to a fixed version: jeremyevans rodauth 2.46.0. Check the vendor advisory for mitigations.

References

https://github.com/jeremyevans/rodauth
https://github.com/jeremyevans/rodauth/commit/35d74a9f07b2005a8ea75fc11a6539c04f3c2840
https://github.com/jeremyevans/rodauth/security/advisories/GHSA-3pvr-v35r-4r75
https://www.vulncheck.com/advisories/rodauth-before-2.46.0-authentication-bypass-via-webauthn-login

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