CVE-2011-4564

CVE-2011-4564 is a none vulnerability published on November 28, 2011. Cross-site scripting (XSS) vulnerability in the admin script in Active CMS 1.2 allows remote attackers to inject arbitrary web script or HTML via the mod parameter in a module action.

CVE-2011-4564 was first published in the National Vulnerability Database on November 28, 2011, with the most recent update on April 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

CVE-2011-4564 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 62.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2011-4564, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.