Unauthenticated RCE in Mirasvit Full Page Cache Warmer for Magento 2
CVE-2026-45247 is a PHP object injection / insecure deserialization vulnerability in Mirasvit Full Page Cache Warmer for Magento 2 affecting versions before 1.11.12. The extension processes attacker-controlled data from the CacheWarmer cookie and passes it to PHP's native unserialize() function without sufficient restrictions. Because the cookie is client-controlled and the vulnerable code path is reachable on normal storefront requests, an unauthenticated remote attacker can supply a crafted serialized PHP object. By leveraging gadget chains present in Magento and its dependencies, the attacker can turn the unsafe deserialization into arbitrary code execution on the server.
Are you exposed to this one?
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
56 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical unauthenticated remote code execution vulnerability in the Mirasvit Full Page Cache Warmer extension for Magento/Adobe Commerce. It is significant because CISA added it to KEV after active exploitation, and exploitation can give attackers arbitrary code execution and potentially full administrative control over production e-commerce servers.
A critical PHP object injection/deserialization of untrusted data vulnerability in Mirasvit Full Page Cache Warmer for Magento 2 that allows unauthenticated remote code execution via a crafted CacheWarmer cookie processed by PHP unserialize().
A critical unauthenticated remote code execution vulnerability in the Mirasvit Full Page Cache Warmer extension for Magento caused by insecure deserialization of untrusted data via the CacheWarmer cookie.
A critical unauthenticated remote code execution vulnerability in the Mirasvit Cache Warmer Magento full-page cache extension caused by deserialization of untrusted data / PHP object injection via the CacheWarmer cookie.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.