CVE-2026-76212

phpMyFAQ before 4.1.7, when configured to use PostgreSQL via the native pgsql PHP extension, declares an incorrect LIKE ESCAPE character ('=') in the Search/Database/Pgsql.php backend while escapeLikeWildcards() escapes user input with the '|' prefix. As a result, wildcard escaping is a no-op and user-supplied % and _ characters remain active LIKE wildcards. An unauthenticated attacker can submit such characters in the public FAQ search form to force maximally broad pattern matches and expensive sequential scans, resulting in a denial of service. The PDO PostgreSQL backend is not affected, and quotes remain escaped so this does not enable quote-breaking SQL injection or data exfiltration.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-5hx6-c293-588h	Exploit Mitigation Vendor Advisory
https://www.vulncheck.com/advisories/phpmyfaq-before-like-wildcard-injection-via-postgresql	Third Party Advisory
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-5hx6-c293-588h	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:phpmyfaq:phpmyfaq:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-19 14:17

Updated : 2026-09-01 15:20

NVD link : CVE-2026-76212

Mitre link : CVE-2026-76212

CVE.ORG link : CVE-2026-76212

JSON object : View

Products Affected

phpmyfaq

phpmyfaq

CWE

CWE-88

Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

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