PHP Object Injection Vulnerability in Mirasvit Full Page Cache Warmer for Magento 2
CVE-2026-45247

9.3CRITICAL

Key Information:

Vendor

Mirasvit

Vendor
CVE Published:
26 May 2026

Badges

📈 Score: 1,100👾 Exploit Exists🟡 Public PoC🟣 EPSS 27%🦅 CISA Reported📰 News Worthy

What is CVE-2026-45247?

false

CISA has reported CVE-2026-45247

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2026-45247 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Affected Version(s)

Full Page Cache Warmer for Magento 2 0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

News Articles

CISA Warns of critical Magento Cache Warmer RCE flaw Exploited in Attacks - IT Security News

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued an urgent warning about a critical remote code execution vulnerability affecting the Mirasvit Full Page Cache Warmer extension for Magento, tracked as CVE-2026-45247. The flaw, stemming from insecure deserialization of…Read ...

3 weeks ago

U.S. CISA adds Mirasvit Full Page Cache Warmer flaw to its Known Exploited Vulnerabilities catalog - IT Security News

U.S. Cybersecurity and Infrastructure Security Agency (CISA) adds Mirasvit Full Page Cache Warmer flaw to its Known Exploited Vulnerabilities catalog. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) added Mirasvit Full Page Cache Warmer flaw, tracked as CVE-2026-45247 (CVSS ver 4.0…...

3 weeks ago

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

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…Read more ...

3 weeks ago

References

EPSS Score

27% chance of being exploited in the next 30 days.

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 📰

    First article discovered by Securityweek

  • 👾

    Exploit known to exist

  • 🦅

    CISA Reported

  • Vulnerability published

  • Vulnerability Reserved

Credit

Sansec
.