CVE-2026-45247

CriticalActively exploited (CISA KEV)

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.

SeverityCritical

CVSS9.8

Exploit probability—

ProductMirasvit Full Page Cache Warmer

PublishedMay 26, 2026

First seenMay 26, 2026

Added to KEVJun 3, 2026

Weakness typeCWE-502Deserialization of untrusted data

How to fix

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.

CISA due date: Jun 6, 2026

Update

mirasvit full_page_cache_warmer1.11.12 or later

Patches

mirasvit.com/package/changelog/?package=mirasvit/module-cache-warmer

Affected products

Product	Affected versions	Fixed in
mirasvit full_page_cache_warmer	v < 1.11.12	1.11.12

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