CVE-2026-82466
Publication date 31 August 2026
Last updated 31 August 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| ruby-rodauth | 26.04 LTS resolute | Not in release |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release |
Severity score breakdown
CVSS version:
Base score
9.4 · Critical
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
Base score
8.7 · High
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-82466
- https://github.com/jeremyevans/rodauth/security/advisories/GHSA-3pvr-v35r-4r75
- https://github.com/jeremyevans/rodauth
- https://github.com/jeremyevans/rodauth/commit/35d74a9f07b2005a8ea75fc11a6539c04f3c2840
- https://www.vulncheck.com/advisories/rodauth-before-2.46.0-authentication-bypass-via-webauthn-login