CVE-2026-45247

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.

Score

CVSS 3.1 9.8 Critical

Status

Analyzed - disclosure@vulncheck.com

Published

2026-05-26

Last modified

2026-06-04

Known exploited (CISA KEV)

since 2026-06-03, action due 2026-06-06: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Weaknesses

CWE-502

Affected products

• Full Page Cache Warmer (Mirasvit)
• Full Page Cache Warmer For Magento 2 (Mirasvit)

References

• 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-…