CVE-2025-66492
Masa CMS is an open source Enterprise Content Management platform.
Published Dec 12, 2025 · updated Oct 14, 2026 · masacms masacms
Masa CMS is an open source Enterprise Content Management platform. Versions 7.2.8 and below, 7.3.1 through 7.3.13, 7.4.0-alpha.1 through 7.4.8 and 7.5.0 through 7.5.1 are vulnerable to XSS when an unsanitized value of the ajax URL query parameter is directly included within the section of the HTML page. An attacker can execute arbitrary scripts in the context of the user's session, potentially leading to Session Hijacking, Data Theft, Defacement and Malware Distribution. This issue is fixed in versions 7.5.2, 7.4.9, 7.3.14, and 7.2.9. To work around this issue, configure a Web Application Firewall (WAF) rule (e.g., ModSecurity) to block requests containing common XSS payload characters in the ajax query parameter. Alternatively, implement server-side sanitization using middleware to strip or escape dangerous characters from the ajax parameter before it reaches the vulnerable rendering logic.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Dec 12, 2025 · NIST NVD
Detected
Masa CMS is an open source Enterprise Content Management platform. Versions 7.2.8 and below, 7.3.1 through 7.3.13, 7.4.0-alpha.1 through 7.4.8 and 7.5.0 through 7.5.1 are vulnerable to XSS when an unsanitized value of the ajax URL query parameter is directly included within the section of the HTML page. An attacker can execute arbitrary scripts in the context of the user's session, potentially lea
Oct 14, 2026 · NIST NVD
Updated
Masa CMS is an open source Enterprise Content Management platform. Versions 7.2.8 and below, 7.3.1 through 7.3.13, 7.4.0-alpha.1 through 7.4.8 and 7.5.0 through 7.5.1 are vulnerable to XSS when an unsanitized value of the ajax URL query parameter is directly included within the section of the HTML page. An attacker can execute arbitrary scripts in the context of the user's session, potentially lea
Affected
- cpe masacms/masacmsversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2025-66492
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-66492
30-day exploitation probability 0.3%
first.org - NIST NVDVulnerability recordCVE-2025-66492
Masa CMS is an open source Enterprise Content Management platform. Versions 7.2.8 and below, 7.3.1 through 7.3.13, 7.4.0-alpha.1 through 7.4.8 and 7.5.0 through 7.5.1 are vulnerable to XSS when an unsanitized value of the ajax URL query parameter is directly included within the <
nvd.nist.gov