VulnerabilityALERT Critical

CVE-2026-45247: Mirasvit Full Page Cache Warmer Deserialization of Untrusted Data Vulnerability

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.

Impact

CISA lists CVE-2026-45247 as known exploited in the wild for Mirasvit Mirasvit Full Page Cache Warmer. Ransomware campaign use: Unknown. Federal remediation due date: 2026-06-06.

Recommended 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.

Published: 6/3/2026, 12:00:00 AMSource: CISA Known Exploited Vulnerabilities CatalogTags: CVE-2026-45247, Mirasvit, Mirasvit Full Page Cache Warmer, CISA KEV, CWE-502