CVE-2026-76214: phpMyFAQ before 4.1.7 fails to persist the WebAuthn login challenge generated by prepareForLogin, because neit

Q: How do I fix CVE-2026-76214?

phpmyfaq: upgrade to 4.1.7. Exact commands for each OS are on this page.

Q: Is CVE-2026-76214 being exploited?

CVE-2026-76214 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-76214 affect?

CVE-2026-76214 affects phpmyfaq. Severity is high (CVSS 7.4). 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

Q: How urgent is CVE-2026-76214?

Priority 39/100. High severity; Remotely exploitable, no login, no user action

Routine

HIGH 7.4REMOTEUPGRADE

CVE-2026-76214 is a high-severity flaw (CVSS 7.4) affecting phpmyfaq. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.4 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-294
Published	2026-08-19
Last modified	2026-09-01

Publisher (CNA): VulnCheck · Vendor: phpmyfaq

Last updated 2026-09-01 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-19 14:17 UTCPublished CVE record published
2026-09-01 15:20 UTCUpdated Record last modified

phpmyfaq phpmyfaq UPGRADE

Affected: < 4.1.7

Fixed in: 4.1.7

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy phpmyfaq || rpm -q phpmyfaq || phpmyfaq --version

2. UPGRADE to 4.1.7 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade phpmyfaq

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade phpmyfaq

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-76214?

phpmyfaq: upgrade to 4.1.7. Exact commands for each OS are on this page.

Is CVE-2026-76214 being exploited?

CVE-2026-76214 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-76214 affect?

CVE-2026-76214 affects phpmyfaq. Severity is high (CVSS 7.4). 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

How urgent is CVE-2026-76214?

Priority 39/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-34728 HIGH 8.7 UPGRADE phpMyFAQ is an open source FAQ web application
CVE-2026-32629 MEDIUM 6.1 UPGRADE phpMyFAQ is an open source FAQ web application
CVE-2026-34729 MEDIUM 6.1 UPGRADE phpMyFAQ is an open source FAQ web application
CVE-2026-76208 HIGH 8.2 UPGRADE phpMyFAQ versions 3.1.0 through 4.1.6 contain an authentication bypass vulnerability in AuthLdap::create()
CVE-2026-75920 MEDIUM 5.3 UPGRADE phpMyFAQ before v4.1.6 writes content backup ZIP archives to the web-accessible document root at content.zip,

References

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