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CVE-2026-76214

CriticalCVSS 9.1 / 10
Published Aug 19, 2026·Last modified Aug 22, 2026
Affected Components(1429)
thorsten/phpmyfaq
development-nightly-2025-10-22
thorsten/phpmyfaq
development-nightly-2024-02-07
thorsten/phpmyfaq
development-nightly-2025-10-02
1 / 477
Description

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.

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Risk Scores
Base Score
9.1

The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.

Threat Intelligence
6.9

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.39%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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