Risk Letters

Exploited vulnerability

CVE-2026-45247

TLP:CLEAR

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.

Facts

  • Vendor: Mirasvit
  • Product: Mirasvit Full Page Cache Warmer
  • CVSS: 9.8
  • EPSS (probability of exploitation within 30 days): 26.2 %
  • On CISA's Known Exploited Vulnerabilities list since: 3 June 2026
  • First known exploitation: 3 June 2026
  • CISA's deadline for US federal agencies: 6 June 2026
  • Weakness: CWE-502
  • First seen by Risk Letters: 26 May 2026

Members see which Nordic sectors the flaw hits, and what to do about it.

Get the full brief

Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD