Vulnerability Description
Psono Server CE & EE versions 3.1.0 through 7.2.3 did not consume a stored WebAuthn challenge after assertion verification. An unauthenticated remote attacker who possessed the user's password and one captured valid WebAuthn assertion could replay that assertion with separate login tokens while the stored challenge remained unchanged, bypassing the WebAuthn second factor. The attack required capture of a valid assertion and did not itself disclose plaintext secrets.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://gitlab.com/esaqa/esaqa/security-advisories/-/blob/master/advisories/CVE-
- https://gitlab.com/esaqa/psono/psono-server
- https://gitlab.com/esaqa/psono/psono-server/-/blob/v7.2.3/psono/restapi/serializ
- https://gitlab.com/esaqa/psono/psono-server/-/commit/9c9a7f1701535df63370340dcc8
- https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4
FAQ
What is CVE-2026-117470?
CVE-2026-117470 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Psono Server CE & EE versions 3.1.0 through 7.2.3 did not consume a stored WebAuthn challenge after assertion verification. An unauthenticated remote attacker who possessed the user's password and one...
How severe is CVE-2026-117470?
CVE-2026-117470 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-117470?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.