Deserialization in Mirasvit Full_page_cache_warmer
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 C…
Vulnerability class: Insecure Deserialization
EPSS: 0.061 (91.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
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.
Public proof-of-concept exploits
References
- disclosure@vulncheck.com (technical-description, Third Party Advisory)
- disclosure@vulncheck.com (release-notes, Release Notes, patch)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Third Party Advisory)
Frequently asked questions
- What is CVE-2026-45247?
- CVE-2026-45247 is a critical-severity vulnerability in Mirasvit Full_page_cache_warmer, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-05-26.
- How severe is CVE-2026-45247?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2026-45247 known to be exploited?
- Yes. CVE-2026-45247 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-06-03), indicating it is being actively exploited. 1 public proof-of-concept repositories are indexed.