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9.3
CVSS
Critical

CVE-2026-45247

PUBLISHED

Mirasvit Cache Warmer for Magento < 1.11.12 PHP Object Injection

Exploited in the wild PoC available Remote Low complexity No user interaction
Vendor
Mirasvit
Product
Full Page Cache Warmer for Magento 2
Published
May 26, 2026
EPSS
6.1% · 91% pctl

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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.

magento php cisa

Weaknesses (CWE)

  • CWE-502

    Deserialization of Untrusted Data

CVSS scores

CVSS v4.0 9.3 Critical

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

CVSS v3.1 9.8 Critical

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

Exploitation status

Exploited in the wild

Recorded 2026-06-03 18:00:27 UTC · CISA

Proof of concept available

Recorded 2026-06-09 21:39:33 UTC · GitHub

References

Known exploited vulnerability sources

Catalogues that list this CVE as a known exploited vulnerability.

Source Added
CISA First 2026-06-03 18:00 UTC
All CISA Advisories 2026-06-03 18:20 UTC
The Shadowserver (via CIRCL) 2026-06-03 19:00 UTC
CVE 2026-06-03 19:40 UTC
TheHackerNews 2026-06-04 08:20 UTC

Recent mentions

CISA Adds Exploited Magento RCE Flaw CVE-2026-45247 to KEV Catalog

TheHackerNews · Jun 04, 2026

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Wednesday added a critical flaw impacting Mirasvit Cache Warmer, a popular Magento full-page cache extension, to its Known Exploited Vulnerabilities (KEV) catalog, following reports of active exploitation in the wild. The vulnerability, tracked as CVE-2026-45247 (CVSS score: 9.8), is a case of deserialization of untrusted

CISA Adds One Known Exploited Vulnerability to Catalog

All CISA Advisories · Jun 03, 2026

CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-45247 Mirasvit Full Page Cache Warmer Deserialization of Untrusted Data Vulnerability This type of vulnerability is a frequent attack vector for malicious cyber actors and poses significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.

Potential proof of concepts

These PoCs are unverified and could contain malware. Use at your own risk.

fevar54/PoC-Funcional---CVE-2026-45247-Mirasvit-Full-Page-Cache-Warmer-RCE-

github · Created 2026-06-09 21:39:33 UTC · 0 stars

CVE-2026-45247 - Mirasvit Full Page Cache Warmer for Magento 2 Unauthenticated PHP Object Injection -> Remote Code Execution

HORKimhab/CVE-2026-45247

github · Created 2026-06-04 13:22:56 UTC · 0 stars

CVE-2026-45247 - Draft

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Added to KEVIntel

  • KEV confirmed by All CISA Advisories

  • KEV confirmed by The Shadowserver (via CIRCL)

  • KEV confirmed by CVE

  • KEV confirmed by TheHackerNews

  • Proof of Concept Exploit Available