CVE-2026-111887 thorsten CVE debrief

Who should care

Defenders responsible for phpMyFAQ installations should assess exposure and prioritize verification and remediation. This includes reviewing and updating phpMyFAQ versions to 4.1.9 or later, or 4.2.0-beta or later, and monitoring for potential phishing attempts using enumerated display names and emails. Security teams and vulnerability management teams should also be aware of the potential impact on their environments and take steps to verify exposure and

Why it matters

CVE-2026-111887 is a medium-severity account enumeration vulnerability in phpMyFAQ that allows unauthenticated attackers to confirm registered display names and emails, potentially leading to targeted phishing attempts.

• Verification of phpMyFAQ installations for exposure to account enumeration
• Potential phishing attempts using enumerated display names and emails
• Remediation priority for phpMyFAQ versions before 4.1.9 and 4.2.0-alpha before 4.2.0-beta

Technical summary

The CVE-2026-111887 vulnerability in phpMyFAQ allows unauthenticated attackers to confirm registered display names and emails via a distinct HTTP 409 response. This account enumeration vulnerability can potentially lead to targeted phishing attempts. Defenders should prioritize verifying exposure of phpMyFAQ installations to this account enumeration vulnerability and review vendor guidance for remediation steps. The vulnerability affects phpMyFAQ versions before 4.1.9 and 4.2.0-alpha before 4.2.0-beta. Limited evidence is available from public CVE and NVD information.

Defensive priority

Defenders should prioritize verifying exposure of phpMyFAQ installations to this account enumeration vulnerability.

Recommended defensive actions

• Verify phpMyFAQ installations for exposure to this account enumeration vulnerability
• Review and update phpMyFAQ versions to 4.1.9 or later, or 4.2.0-beta or later
• Monitor for potential phishing attempts using enumerated display names and emails
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide details on the account enumeration vulnerability in phpMyFAQ before 4.1.9 and 4.2.0-alpha before 4.2.0-beta. Evidence is limited to public CVE and NVD information. Defenders should verify phpMyFAQ installations for exposure and review vendor guidance for remediation. The vulnerability allows unauthenticated attackers to confirm registered display names and emails via a distinct HTTP 409 response.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.