CVE-2026-45247

Mirasvit Cache Warmer for Magento < 1.11.12 PHP Object Injection

9.3 CriticalIn KEVPublic exploit

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

26.2%Up 26.1 points since May 27, 2026

What each source reports

CVE List Score used 9.3

Mirasvit Cache Warmer for Magento < 1.11.12 PHP Object Injection

Record: CVE-2026-45247
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

EUVDEUVD-2026-31837 9.3

Record: EUVD-2026-31837
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-rg8p-9rpg-r32p 9.3

Mirasvit Full Page Cache Warmer for Magento 2 before version 1.11.12 contains a PHP object...

Record: GHSA-rg8p-9rpg-r32p
CVSS 4.0: 9.3 CriticalCVSS: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
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

CISA KEV No score

Mirasvit Full Page Cache Warmer Deserialization of Untrusted Data Vulnerability

Mirasvit Full Page Cache Warmer contains a deserialization of untrusted data vulnerability that could allow unauthenticated attackers to achieve remote code execution by supplying a crafted serialized PHP object in the CacheWarmer cookie.

Record: CVE-2026-45247
Weakness: CWE-502
Updated: 2026-11-02

NVD 9.3

Record: CVE-2026-45247
CVSS 4.0: 9.3 CriticalCVSS: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
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
PoC in GitHub	HORKimhab/CVE-2026-45247	2026-06-04
PoC in GitHub	fevar54/PoC-Funcional---CVE-2026-45247-Mirasvit-Full-Page-Cache-Warmer-RCE-	2026-06-09

History

History
Recorded	Changed	Sources
Nov 3, 2026	exploitation
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, CISA KEV, NVD, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-45247 is a critical vulnerability (CVSS 9.3) in Mirasvit Full Page Cache Warmer For Magento 2, published May 26, 2026. CISA lists it as known to be exploited, since June 3, 2026. EUVD reports exploitation since June 3, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 26.2%, the 98th percentile. No source names a fixed version.