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CVE-2026-45247

9.8
CRITICALCVSS v3.1 Base Score
0.14%
LOW RiskEPSS (33rd percentile)
KEV

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.

Published: 5/26/2026
Modified: 6/3/2026
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ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

Mirasvit Full Page Cache Warmer Deserialization of Untrusted Data Vulnerability

Vendor / Product:

Mirasvit Mirasvit Full Page Cache Warmer

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.

Due Date: 6/6/2026(URGENT)
Added to KEV:

6/3/2026

Notes:

https://mirasvit.com/package/changelog/?package=mirasvit/module-cache-warmer ; https://nvd.nist.gov/vuln/detail/CVE-2026-45247

Vulnerability Summary

CVSS v3 Score

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score (Exploitation Probability)

0.14%LOW Exploitation Risk
33rd percentile

This vulnerability has a 0.14% probability of being exploited in the next 30 days, ranking higher than 33% of all scored CVEs.

CWE Classification

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