CVE-2026-82470
Publication date 31 August 2026
Last updated 31 August 2026
Ubuntu priority
Description
Rodauth before 2.47.0 contains a time-based one-time password reuse vulnerability in the otp feature that fails to track the last accepted code timestamp. Attackers who observe a valid TOTP code can replay it during the drift window to bypass the second authentication factor.
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
5.1 · Medium
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Base score
5.4 · Medium
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-82470
- https://github.com/jeremyevans/rodauth/security/advisories/GHSA-hhvg-6qmv-58vc
- https://github.com/jeremyevans/rodauth
- https://github.com/jeremyevans/rodauth/commit/3bfd0a11bae70935b1944e71dbe787dd0c3a62ad
- https://www.vulncheck.com/advisories/rodauth-before-2.47.0-totp-code-reuse-via-drift-window