CRITICAL CISA KEV

CVE-2026-45247

CVSS v3

9.8

CRITICAL

EPSS Score

2.1 %

exploit probability, as of 2026-10-19

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-45247 yet.

Full record on NVD

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.

CISA Known Exploited Vulnerability

Date Added: 2026-06-03
Patch Due Date: 2026-06-06
Ransomware Use: Unknown

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2026-05-26
Last Modified: 2026-07-24

Frequently asked questions

What is CVE-2026-45247?

Is CVE-2026-45247 actively exploited?

Yes. CVE-2026-45247 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-06-06.

What is the CVSS score for CVE-2026-45247?

CVE-2026-45247 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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