CVE-2026-111887

phpMyFAQ before 4.1.9 and 4.2.0-alpha before 4.2.0-beta contains an account enumeration vulnerability that allows unauthenticated attackers to confirm registered display names and emails via a distinct HTTP 409 response. Attackers can submit guest comments to the comment create endpoint with candidate user and mail values to link names to emails for targeted phishing.

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 LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-pgxw-7c68-83w7
https://www.vulncheck.com/advisories/phpmyfaq-before-4.1.9-and-4.2.0-alpha-before-4.2.0-beta-account-enumeration-via-guest-comment-endpoint
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-pgxw-7c68-83w7

Configurations

No configuration.

History

18 Oct 2026, 14:16

Type	Values Removed	Values Added
References	~~() https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-pgxw-7c68-83w7 -~~	() https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-pgxw-7c68-83w7 -

17 Oct 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-17 19:16

Updated : 2026-10-18 14:16

NVD link : CVE-2026-111887

Mitre link : CVE-2026-111887

CVE.ORG link : CVE-2026-111887

JSON object : View

Products Affected

No product.

CWE

CWE-204

Observable Response Discrepancy

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