CVE-2026-45247
Confirmed PUBLISHEDMirasvit Cache Warmer for Magento < 1.11.12 PHP Object Injection
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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.
- CVE Published
- May 26, 2026
- Exploitation Reported
- Jun 03, 2026
- CVSS
- 9.3 Critical
- EPSS
- 27.5%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| Mirasvit |
Full Page Cache Warmer for Magento 2
|
0 to < 1.11.12 |
Affected |
CVE References
- Patch — mirasvit.com mirasvit.com · Patch https://mirasvit.com/package/changelog/?package=mirasvit/module-cache...
- Third-Party Advisory — vulncheck.com vulncheck.com · Third-Party Advisory https://www.vulncheck.com/advisories/mirasvit-cache-warmer-for-magent...
- Technical Description — sansec.io sansec.io · Technical Description https://sansec.io/research/mirasvit-cache-warmer-object-injection
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CISA First | 2026-06-03 18:00 UTC |
| All CISA Advisories | 2026-06-03 18:20 UTC |
| The Shadowserver | 2026-06-03 19:00 UTC |
| CVE | 2026-06-03 19:40 UTC |
| TheHackerNews | 2026-06-04 08:20 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS: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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
Exploited in the wild
Recorded 2026-06-03 18:00:27 UTC · CISA
Proof of concept available
Recorded 2026-06-09 21:39:33 UTC · GitHub
Weaknesses (CWE)
-
Deserialization of Untrusted Data
Recent Mentions
TheHackerNews · Jun 04, 2026
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 Vulnerabilities (KEV) catalog, following reports of active exploitation in the wild. The vulnerability, tracked as CVE-2026-45247 (CVSS score: 9.8), is a case of deserialization of untrusted
All CISA Advisories · Jun 03, 2026
CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-45247 Mirasvit Full Page Cache Warmer Deserialization of Untrusted Data Vulnerability This type of vulnerability is a frequent attack vector for malicious cyber actors and poses significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2026-06-09 21:39:33 UTC · 0 stars
CVE-2026-45247 - Mirasvit Full Page Cache Warmer for Magento 2 Unauthenticated PHP Object Injection -> Remote Code Execution
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
13:22 UTC about 2 months ago13:22 UTC · about 2 months ago
Public PoC available
Public proof-of-concept code published
-
08:20 UTC about 2 months ago08:20 UTC · about 2 months ago
KEV confirmed by TheHackerNews
Exploitation attested by an external source
-
19:40 UTC about 2 months ago19:40 UTC · about 2 months ago
KEV confirmed by CVE
Exploitation attested by an external source
-
19:00 UTC about 2 months ago19:00 UTC · about 2 months ago
KEV confirmed by The Shadowserver
Exploitation attested by an external source
-
18:20 UTC about 2 months ago18:20 UTC · about 2 months ago
KEV confirmed by All CISA Advisories
Exploitation attested by an external source
-
18:00 UTC about 2 months ago18:00 UTC · about 2 months ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
14:15 UTC about 2 months ago14:15 UTC · about 2 months ago
CVE published
Vulnerability disclosed publicly
-
14:14 UTC 2 months ago14:14 UTC · 2 months ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2026-45247
{
"cve_id": "CVE-2026-45247",
"title": "Mirasvit Cache Warmer for Magento < 1.11.12 PHP Object Injection",
"affected_vendor": "Mirasvit",
"affected_product": "Full Page Cache Warmer for Magento 2",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 9.3,
"epss_score": 0.27546,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}