CVE-2026-45247

Mirasvit Full Page Cache Warmer Deserialization of Untrusted Data

9.8 CRITICALActively exploited (CISA KEV)EPSS 2.08%

Published26 May 2026
Added to CISA KEV3 Jun 2026
Remediation due6 Jun 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected products

Mirasvit Full Page Cache Warmer< 1.11.12

Remediation

Fixed in

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.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
https://www.vulncheck.com/advisories/mirasvit-cache-warmer-for-magento-php-object-injectionThird Party Advisory

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2026-45247 being actively exploited?

Yes. CVE-2026-45247 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 3 Jun 2026.

How severe is CVE-2026-45247?

CVE-2026-45247 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 2.08% probability of exploitation.

Which products are affected by CVE-2026-45247?

Affected products include Mirasvit Full Page Cache Warmer.

How do I fix CVE-2026-45247?

Upgrade affected software to a fixed version, for example Mirasvit Full Page Cache Warmer 1.11.12 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-45247 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.