Medium severity · published Oct 17, 2026
CVE-2026-111887
phpMyFAQ before 4.1.9 and 4.2.0-alpha before 4.2.0-beta Account Enumeration via Guest Comment Endpoint
5.3
CVSS
0.3%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PH
phpMyFAQ · thorsten
before 4.1.9; 4.2.0-alpha before 4.2.0-beta · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-111887
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-111887
github.com
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-pgxw-7c68-83w7
www.vulncheck.com
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
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