CVE-2026-45247Known exploitationNetwork attack vector

Unauthenticated code execution via CacheWarmer cookie deserialization

Published May 26, 2026 · Updated May 26, 2026

PHP object injection in Mirasvit Full Page Cache Warmer for Magento 2 before 1.11.12 allows remote attackers to execute server code. The storefront plugin passes attacker-controlled CacheWarmer cookie data to PHP unserialize() without restricting instantiable classes. Ordinary storefront requests reach the plugin without authentication or a configuration toggle, and Magento gadget chains enable arbitrary code execution.

CVSS severity9.3
Critical
EPSS probability27.55%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

PHP object injection in Mirasvit Full Page Cache Warmer for Magento 2 before 1.11.12 allows remote attackers to execute server code. The storefront plugin passes attacker-controlled CacheWarmer cookie data to PHP unserialize() without restricting instantiable classes. Ordinary storefront requests reach the plugin without authentication or a configuration toggle, and Magento gadget chains enable arbitrary code execution.

The record

CVE
CVE-2026-45247
Published
May 26, 2026
Updated
May 26, 2026
Vendor
Mirasvit
Product
Full Page Cache Warmer for Magento 2
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 26, 2026CVE publishedPublication date reported by the CVE source.
  2. May 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.11.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mirasvit · Full Page Cache Warmer for Magento 2version=0 <1.11.12

Published CVSS scores

9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3VulnCheckCVSS: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 describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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