Mirasvit Full Page Cache Warmer Deserialization of Untrusted Data Vulnerability
Mirasvit Full Page Cache Warmer for Magento 2 before version 1.11.12 contains a PHP object injection vulnerability that allows unauthenticated attackers to achieve remote code execution by supplying a crafted serialized PHP object in the CacheWarmer cookie. Attackers can exploit the unrestricted call to PHP's native unserialize() function combined with gadget chains available in Magento and its dependencies to execute arbitrary code on the server.
MANARTECH SECURITY ALERT
Mirasvit Full Page Cache Warmer Deserialization of Untrusted Data Vulnerability
CVE Numbers
CVE-2026-45247
Affected Product
Mirasvit Full Page Cache Warmer — Mirasvit
Threat Description
Mirasvit Full Page Cache Warmer for Magento 2 before version 1.11.12 contains a PHP object injection vulnerability that allows unauthenticated attackers to achieve remote code execution by supplying a crafted serialized PHP object in the CacheWarmer cookie. Attackers can exploit the unrestricted call to PHP's native unserialize() function combined with gadget chains available in Magento and its dependencies to execute arbitrary code on the server.
Severity Scale
CRITICALHIGHMEDIUMLOW
Severity
CRITICAL
Affected Versions
To be reviewed
Recommended Mitigation
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Reference Links
https://mirasvit.com/package/changelog/?package=mirasvit/module-cache-warmer
https://sansec.io/research/mirasvit-cache-warmer-object-injection
https://www.vulncheck.com/advisories/mirasvit-cache-warmer-for-magento-php-object-injection
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-45247
https://www.imperva.com/blog/imperva-customers-protected-against-cve-2026-45247-in-mirasvit-full-page-cache-warmer-for-magento/
https://nvd.nist.gov/vuln/detail/CVE-2026-45247