7.4highHigh
CVE-2026-76214
Phpmyfaq Phpmyfaq
phpMyFAQ before 4.1.7 fails to persist the WebAuthn login challenge generated by prepareForLogin, because neither WebAuthn controller saves the mutated key objects back to the database. At login the anti-replay comparison is skipped by its own null guard, allowing an attacker who captures a successful WebAuthn assertion to replay it indefinitely and authenticate as the user without any interaction or hardware key.
Exploitation status
- A vendor advisory or patch reference has been published.
What the metrics mean
- It is reachable over a network, without needing local access.
- For an attacker who can reach it, exploitation depends on conditions outside the attacker's control.
- To exploit it, no account is needed.
- Beyond that, no action by a user is required.
Scoring
- CVSS
- 7.4 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N- CVSS v4
- 9.1
- Weakness
- CWE-294
- Assigned by
- disclosure@vulncheck.com
Dates
- Published
- 2026-08-19
- Last modified
- 2026-09-01
- Sources
- NVD
Affected products
- Phpmyfaq Phpmyfaq- 4.1.7
As listed in the NVD configuration data. Not a statement about your estate.