CVE-2026-45247
Mirasvit Full Page Cache Warmer Deserialization of Untrusted Data Vulnerability - [Actively Exploited]
Description
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.
INFO
Published Date :
May 26, 2026, 3:16 p.m.
Last Modified :
June 3, 2026, 7:55 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
Mirasvit Full Page Cache Warmer contains a deserialization of untrusted data vulnerability that could allow unauthenticated attackers to achieve remote code execution by supplying a crafted serialized PHP object in the CacheWarmer cookie.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Unknown
https://mirasvit.com/package/changelog/?package=mirasvit/module-cache-warmer ; https://nvd.nist.gov/vuln/detail/CVE-2026-45247
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Update the Mirasvit Full Page Cache Warmer extension.
- Verify the extension version is 1.11.12 or higher.
- Remove any potentially malicious cookies.
- Monitor server for unauthorized activity.
Public PoC/Exploit Available at Github
CVE-2026-45247 has a 8 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-45247.
| URL | Resource |
|---|---|
| https://mirasvit.com/package/changelog/?package=mirasvit/module-cache-warmer | Release Notes |
| https://sansec.io/research/mirasvit-cache-warmer-object-injection | Third Party Advisory |
| https://www.vulncheck.com/advisories/mirasvit-cache-warmer-for-magento-php-object-injection | Third Party Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-45247 | US Government Resource |
| https://www.imperva.com/blog/imperva-customers-protected-against-cve-2026-45247-in-mirasvit-full-page-cache-warmer-for-magento/ | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45247 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-45247
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
CVE-2026-45247 - Mirasvit Full Page Cache Warmer for Magento 2 Unauthenticated PHP Object Injection -> Remote Code Execution
Shell Python
CVE-2026-45247 - Draft
None
Python
Audit CVE impact, patch status, remediation progress, and verification results across systems.
Makefile Go
Security Tracker
Python
Automated GitHub Actions workflow that fetches and updates the latest cybersecurity news every Tuesday and Thursday using RSS feeds.
None
Python
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
security cve exploit poc vulnerability
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-45247 vulnerability anywhere in the article.
-
CybersecurityNews
CISA Warns of critical Magento Cache Warmer RCE flaw Exploited in Attacks
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 extensi ... Read more
-
TheCyberThrone
CISA adds Three Vulnerabilities to KEV Catalog
OverviewCISA has added three new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog based on evidence of active exploitation — CVE-2022-0492, a Linux Kernel Improper Authentication v ... Read more
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security.nl
Magento-webwinkels aangevallen via kritieke Mirasvit-kwetsbaarheid
Op Magento gebaseerde webwinkels worden aangevallen via een kritieke kwetsbaarheid in Mirasvit Full Page Cache Warmer. Via het beveiligingslek kan een ongeauthenticeerde aanvaller willekeurige code op ... Read more
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The Hacker News
CISA Adds Exploited Magento RCE Flaw CVE-2026-45247 to KEV Catalog
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 ... Read more
-
CybersecurityNews
Critical Magento Cache Plugin Vulnerability Enables Remote Code Execution Attacks
A critical security vulnerability has been discovered in a widely used Magento caching plugin that allows attackers to remotely execute malicious code with no login, configuration changes, or admin ac ... Read more
The following table lists the changes that have been made to the
CVE-2026-45247 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 03, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:mirasvit:full_page_cache_warmer:*:*:*:*:*:magento:*:* versions up to (excluding) 1.11.12 Added Reference Type VulnCheck: https://mirasvit.com/package/changelog/?package=mirasvit/module-cache-warmer Types: Release Notes Added Reference Type VulnCheck: https://sansec.io/research/mirasvit-cache-warmer-object-injection Types: Third Party Advisory Added Reference Type CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-45247 Types: US Government Resource Added Reference Type CISA-ADP: https://www.imperva.com/blog/imperva-customers-protected-against-cve-2026-45247-in-mirasvit-full-page-cache-warmer-for-magento/ Types: Third Party Advisory Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/mirasvit-cache-warmer-for-magento-php-object-injection Types: Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 03, 2026
Action Type Old Value New Value Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-45247 Added Reference https://www.imperva.com/blog/imperva-customers-protected-against-cve-2026-45247-in-mirasvit-full-page-cache-warmer-for-magento/ -
CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725
Jun. 03, 2026
Action Type Old Value New Value Added Date Added 2026-06-03 Added Due Date 2026-06-03 Added Required Action 2026-06-03 Added Vulnerability Name 2026-06-03 -
New CVE Received by [email protected]
May. 26, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-502 Added Reference https://mirasvit.com/package/changelog/?package=mirasvit/module-cache-warmer Added Reference https://sansec.io/research/mirasvit-cache-warmer-object-injection Added Reference https://www.vulncheck.com/advisories/mirasvit-cache-warmer-for-magento-php-object-injection