CVE-2026-111887 phpMyFAQ before 4.1.9 and 4.2.0-alpha before 4.2.0-beta Account Enumeration via Guest Comment Endpoint
Unauthenticated attackers can enumerate registered user names and emails via guest comment responses, facilitating targeted phishing attacks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-111887?
CVE-2026-111887 is a medium-severity vulnerability in thorsten phpMyFAQ, published on 17 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-204
Which versions are affected by CVE-2026-111887?
How do I fix CVE-2026-111887?
No fix has been published for CVE-2026-111887 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-111887 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111887 exists.
Sources
Also known as GHSA-cv2x-hcfv-23pm, GHSA-pgxw-7c68-83w7.