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CVE-2026-45247

Mirasvit Full Page Cache Warmer•CRITICAL · CVSS 9.8• In the wild In CISA KEV

What is CVE-2026-45247?

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.

CVSS9.8 NVD 3.1

SeverityCRITICAL

Exploitation In the wild In CISA KEV

EPSS2% · P81

Triage statusActive Exploit

ActionPatch immediately

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

CWECWE-502

NVD published2026-05-26

NVD last modified2026-07-24

Timeline

2026-05-26Published to the U.S. National Vulnerability Database (NVD)
2026-06-03Added to the CISA Known Exploited Vulnerabilities (KEV) catalog
2026-06-06CISA federal remediation deadline (BOD 22-01)
2026-07-24NVD record last updated

CISA Known Exploited Vulnerability

Mirasvit Full Page Cache Warmer Deserialization of Untrusted Data Vulnerability

Added to KEV2026-06-03

Federal patch deadline2026-06-06

Known ransomware useUnknown

Affected product

Mirasvit Full Page Cache Warmer

Remediation Steps

Consult CISA Known Exploited Vulnerabilities catalog entry for full product and version details
Apply vendor security patch
Verify patch deployment across affected systems
Review security logs for evidence of exploitation

References

Referenced in our briefings & reports

Vulnerability Priority Report – Week 5 of June 2026 (June 29 – July 5)
Vulnerability Priority Report – Week 4 of June 2026 (June 22 – 28)
Vulnerability Priority Report – Week 3 of June 2026 (June 15 – 21)
Vulnerability Priority Report – Week 2 of June 2026 (June 8 – 14)
Vulnerability Priority Report – Week 1 of June 2026 (June 1 – 7)

Related vulnerabilities

CVE-2026-63077 – JetBrains TeamCity (same weakness: CWE-502)
CVE-2026-50522 – Microsoft SharePoint (same weakness: CWE-502)
CVE-2026-58644 – Microsoft SharePoint (same weakness: CWE-502)
CVE-2026-44963 (same weakness: CWE-502)
CVE-2026-45659 – Microsoft SharePoint Server (same weakness: CWE-502)
CVE-2026-25874 – Huggingface Lerobot (same weakness: CWE-502)

Browse all tracked CVEs in the defend.network CVE database →

🤖 This CVE page is generated by defend.network from NVD, CISA KEV, EPSS, and our verified daily briefings. Severity and exploitation data come from official sources; always verify remediation steps against the official vendor advisory before acting in production.