CVE-2026-24422
Published: 24 January 2026
Summary
CVE-2026-24422 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor (CWE-200) vulnerability in Phpmyfaq Phpmyfaq. Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 5.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Automated marking applies security attributes to system outputs, making it harder for attackers to exploit unmarked sensitive information leading to unauthorized exposure.
Proper attribute retention and permitted-value enforcement limits unauthorized actors from accessing sensitive information lacking correct labels.
Prevents unauthorized exposure of sensitive information by prohibiting untrusted external systems from processing or storing it.
By enforcing authorization matching prior to sharing, the control reduces the risk of exposing sensitive information to unauthorized actors.
Review and removal of nonpublic information from publicly accessible systems directly prevents exposure of sensitive data to unauthorized actors.
Data mining protection mechanisms detect and block unauthorized bulk extraction of sensitive data, directly mitigating exposure to unauthorized actors.
Literacy training teaches users to recognize and avoid actions that result in unauthorized exposure of sensitive information.
Retaining and monitoring training records confirms personnel have completed privacy and security awareness training on handling sensitive data, reducing the chance of unauthorized exposure due to lack of knowledge.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Direct unauthenticated exploitation of public-facing web API endpoints in phpMyFAQ leading to information disclosure (CWE-200).
NVD Description
phpMyFAQ is an open source FAQ web application. In versions 4.0.16 and below, multiple public API endpoints improperly expose sensitive user information due to insufficient access controls. The OpenQuestionController::list() endpoint calls Question::getAll() with showAll=true by default, returning records marked as…
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non-public (isVisible=false) along with user email addresses, with similar exposures present in comment, news, and FAQ APIs. This information disclosure vulnerability could enable attackers to harvest email addresses for phishing campaigns or access content that was explicitly marked as private. This issue has been fixed in version 4.0.17.
Deeper analysisAI
CVE-2026-24422 is an information disclosure vulnerability in phpMyFAQ, an open source FAQ web application, affecting versions 4.0.16 and below. Multiple public API endpoints lack sufficient access controls, exposing sensitive user information. Specifically, the OpenQuestionController::list() endpoint calls Question::getAll() with showAll=true by default, returning non-public records (isVisible=false) alongside user email addresses. Similar issues exist in the comment, news, and FAQ APIs, as classified under CWE-200 with a CVSS v3.1 base score of 5.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
Unauthenticated attackers can exploit this over the network with low complexity and no user interaction. By querying the affected endpoints, they can harvest email addresses for phishing campaigns or access content explicitly marked as private, enabling targeted social engineering or unauthorized data collection.
The vulnerability has been fixed in phpMyFAQ version 4.0.17. Additional details on the patch and remediation are available in the GitHub security advisory at https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-j4rc-96xj-gvqc.
Details
- CWE(s)