CVE-2026-45247

Name: CVE-2026-45247
Creator: NVD / NIST
Published: 2026-05-26T15:16:39.263+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.3/10Actively ExploitedEPSS 27.55%

Last modified Jun 17, 2026

CVE-2026-45247 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 27.55% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

9.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

27.55%

97.8th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jun 6, 2026.

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Mirasvit	Full Page Cache Warmer	< 1.11.12

References

https://mirasvit.com/package/changelog/?package=mirasvit/module-cache-warmerRelease Notes
https://sansec.io/research/mirasvit-cache-warmer-object-injectionThird Party Advisory
https://www.vulncheck.com/advisories/mirasvit-cache-warmer-for-magento-php-object-injectionThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-45247US Government Resource
https://www.imperva.com/blog/imperva-customers-protected-against-cve-2026-45247-in-mirasvit-full-page-cache-warmer-for-magento/Third Party Advisory

Timeline

Published: May 26, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-45247?

How severe is CVE-2026-45247?

CVE-2026-45247 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 27.55% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2026-45247?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-45247?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST