Vulnerability intelligence

CVE-2026-45247

Mirasvit Full Page Cache Warmer Deserialization of Untrusted Data Vulnerability

Mirasvit Mirasvit Full Page Cache Warmer CWE-502

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.

CVSS Score

9.8

Critical

EPSS — Exploit Probability

28%

Riskier than 98% of all CVEs · checked 2026-09-08

Exploitation

Confirmed in the wild

KEV since 2026-06-03

Remediation

Patch available

Federal deadline 2026-06-06

CISA required action

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

NVD entry Vendor patch PoC / advisory CISA KEV

5 articles across 5 outlets · first covered Jun 1, 2026 · latest Jun 4, 2026

Coverage timeline

CISA adds Magento cache flaw CVE-2026-45247 to KEV catalogue
securityaffairs.com · Jun 4, 2026
CISA warns federal agencies to patch critical Magento cache flaw
www.securityweek.com · Jun 4, 2026
CISA urges patching of exploited Magento RCE flaw CVE-2026-45247
thehackernews.com · Jun 4, 2026
CISA flags Mirasvit cache flaw CVE-2026-45247 as exploited.
www.cisa.gov · Jun 4, 2026
CISA warns of exploits in Magento cache extension CVE-2026-45247
cisa.gov · Jun 3, 2026