TI-2026-27773 Aliases CVE-2026-35672 GHSA-gp95-j463-vv28

phpMyFAQ - Authentication Bypass via Empty API Token

HIGH 77CWE-1188Published 2026-05-28 · Updated 2026-11-08

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: None · High · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

phpMyFAQ before 4.1.3 contains an authentication bypass vulnerability in API v4.0 where the default empty api.apiClientToken allows unauthenticated users to create and modify FAQ entries. Attackers can send an empty x-pmf-token header to bypass token validation and inject malicious content via POST endpoints /api/v4.0/faq/create, /api/v4.0/category, and /api/v4.0/question.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00483 41st percentileScored 2026-11-07

Fix Fixed phpMyFAQ (thorsten): 4.1.3thorsten/phpmyfaq (Packagist): 4.1.3+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
thorsten	phpMyFAQ	before 4.1.3	4.1.3	Patch available	CNA
—	thorsten/phpmyfaq (Packagist)	before 4.1.3	4.1.3	Patch available	GHSA-gp95-j463-vv28
—	phpmyfaq/phpmyfaq (Packagist)	before 4.1.3	4.1.3	Patch available	GHSA-gp95-j463-vv28

phpMyFAQ Vendorthorsten Affected before 4.1.3 Fixed in 4.1.3 Patch available CNA
thorsten/phpmyfaq (Packagist) Vendor— Affected before 4.1.3 Fixed in 4.1.3 Patch available GHSA-gp95-j463-vv28
phpmyfaq/phpmyfaq (Packagist) Vendor— Affected before 4.1.3 Fixed in 4.1.3 Patch available GHSA-gp95-j463-vv28

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:phpmyfaq:phpmyfaq::::::::	—	—	thorsten

cpe:2.3:a:phpmyfaq:phpmyfaq:*:*:*:*:*:*:*:* Versions — — ·thorsten

Remediation

Fix · CNA phpMyFAQ (thorsten) Fixed in 4.1.3
Fix · GHSA-gp95-j463-vv28 thorsten/phpmyfaq (Packagist) Fixed in 4.1.3 Advisory →
Fix · GHSA-gp95-j463-vv28 phpmyfaq/phpmyfaq (Packagist) Fixed in 4.1.3 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-05-28
thorsten phpMyFAQ 4.1.3
4 records Highest priority Priority HIGH 4 HIGH
Other records, highest priority first
- TI-2026-27777 phpMyFAQ - Unauthenticated Password Reset via User Password Update EndpointPriority HIGH 77
- TI-2026-27776 phpMyFAQ - Authentication Bypass via Missing Password Reset Token in /api/user/password/updatePriority HIGH 77
- TI-2026-27772 phpMyFAQ - Insecure Direct Object Reference in User Password APIPriority HIGH 73
Show all 4 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-35672
2026-10-03 Alias added: GHSA-gp95-j463-vv28

References

Advisory 2

Other 1

https://github.com/thorsten/phpMyFAQ

TI-2023-00296 Improper Authentication in thorsten/phpmyfaq CVSS 3.1CRITICAL 9.8
TI-2026-76118 Authentication bypass in phpMyFAQ via WebAuthn credential injection CVSS 4.0CRITICAL 9.3
TI-2026-32868 phpMyFAQ - Unauthenticated Two-Factor Authentication Brute-Force via /admin/check Endpoint CVSS 4.0CRITICAL 9.3
TI-2026-76108 Unauthenticated denial of service in phpMyFAQ API pagination CVSS 4.0HIGH 8.7
TI-2026-53313 phpMyFAQ 3.1.0 through 4.1.6 Authentication Bypass via LDAP CVSS 4.0HIGH 8.8
TI-2026-34083 phpMyFAQ - Unauthenticated Information Disclosure via getIdFromSolutionId Permission Bypass CVSS 4.0HIGH 8.7

See all 224 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences