CVE-2026-82466 Rodauth before 2.46.0 Authentication Bypass via webauthn_login
Logged-in users can bypass authentication to access any other account due to improper credential binding validation in Rodauth.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-82466?
CVE-2026-82466 is a critical authentication bypass vulnerability in jeremyevans rodauth, published on 29 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-287
Which versions are affected by CVE-2026-82466?
How do I fix CVE-2026-82466?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-82466 being exploited?
There is no known exploitation of CVE-2026-82466 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-82466, GHSA-3pvr-v35r-4r75, GHSA-qw88-v783-w782, UBUNTU-CVE-2026-82466.