Mirasvit Full Page Cache Warmer Deserialization of Untrusted Data Vulnerability
Mirasvit — Full Page Cache Warmer for Magento 2
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.
9.8
27.5%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- May 26, 2026
- Modified
- Jul 24, 2026
- Added to KEV
- Jun 3, 2026
- Federal patch due
- Jun 6, 2026
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Weakness classification
Affected packages
Proof-of-concept & exploitation references
2 foundWeaponization
Public repositories whose name or description references CVE-2026-45247, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
References
How this class of flaw gets exploited
Frequently asked questions
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.
How severe is CVE-2026-45247?
CVE-2026-45247 has a CVSS base score of 9.8 out of 10 (CVSS 3.1).
Is CVE-2026-45247 actively exploited in the wild?
Yes. CVE-2026-45247 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Jun 3, 2026, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2026-45247?
27.5% - meaning FIRST.org's EPSS model estimates a 27.5% probability this vulnerability will be exploited in the wild within 30 days (98% percentile among all scored CVEs).
Is there exploit tooling available for CVE-2026-45247?
We found 2 public GitHub repositories referencing CVE-2026-45247, though none matched a known Nuclei template or Metasploit module at last check. Review each one before relying on it - see the proof-of-concept section above.
What type of vulnerability is CVE-2026-45247?
CVE-2026-45247 is classified under CWE-502 (Deserialization of Untrusted Data).
Cross-checked against
Impactr finds and proves whether CVE-2026-45247 - or flaws like it - are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.
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