CVE-2026-76209: phpMyFAQ versions before v4.1.6 fail to validate the security.enableRegistration setting in API endpoints, all

Q: How do I fix CVE-2026-76209?

phpmyfaq: upgrade to 4.1.6. Exact commands for each OS are on this page.

Q: Is CVE-2026-76209 being exploited?

CVE-2026-76209 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-2026-76209 affect?

CVE-2026-76209 affects phpmyfaq. Severity is medium (CVSS 4.3). phpMyFAQ versions before v4.1.6 fail to validate the security.enableRegistration setting in API endpoints, allowing attackers to create user accounts when registration is disabled. Attackers can bypass the registration restriction by submit

Q: How urgent is CVE-2026-76209?

Priority 25/100. Public exploit reference

Routine

MEDIUM 4.3UPGRADE

CVE-2026-76209 is a medium-severity flaw (CVSS 4.3) affecting phpmyfaq. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

phpMyFAQ versions before v4.1.6 fail to validate the security.enableRegistration setting in API endpoints, allowing attackers to create user accounts when registration is disabled. Attackers can bypass the registration restriction by submitting requests to POST /api/register or POST /api/v3.1/register endpoints, which do not check the configuration flag enforced by the HTML registration page.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-862
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 15:21 UTCUpdated Record last modified

phpmyfaq phpmyfaq UPGRADE

Affected: < 4.1.6

Fixed in: 4.1.6

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 4.1.6 (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-2026-76209?

phpmyfaq: upgrade to 4.1.6. Exact commands for each OS are on this page.

Is CVE-2026-76209 being exploited?

CVE-2026-76209 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-2026-76209 affect?

CVE-2026-76209 affects phpmyfaq. Severity is medium (CVSS 4.3). phpMyFAQ versions before v4.1.6 fail to validate the security.enableRegistration setting in API endpoints, allowing attackers to create user accounts when registration is disabled. Attackers can bypass the registration restriction by submit

How urgent is CVE-2026-76209?

Priority 25/100. Public exploit reference

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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