Ravie LakshmananJun 04, 2026Web Security / Vulnerability
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Wednesday added a critical flaw impacting Mirasvit Cache Warmer, a popular Magento full-page cache extension, to its Known Exploited Vulnerabilities (KEV) catalog, following reports of active exploitation in the wild.
The vulnerability, tracked as CVE-2026-45247 (CVSS score: 9.8), is a case of deserialization of untrusted data that could be exploited to execute arbitrary PHP code on an affected server.
"Mirasvit Full Page Cache Warmer contains a deserialization of untrusted data vulnerability that could allow unauthenticated attackers to achieve remote code execution by supplying a crafted serialized PHP object in the CacheWarmer cookie," CISA said.
The shortcoming impacts all versions of the extension prior to version 1.11.12. Patches for the were released on May 25, 2026.
