Which products and versions are affected by CVE-2026-45247?

Affected: Full Page Cache Warmer (Mirasvit); Full Page Cache Warmer for Magento 2. The full list is in the CVE brief.

Is CVE-2026-45247 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since May 29, 2026.

Is CVE-2026-45247 in the CISA KEV catalog?

Yes. It was added on Jun 3, 2026 with a federal remediation due date of Jun 6, 2026.

Is there a public exploit for CVE-2026-45247?

Public exploit code is available.

Is there a fix for CVE-2026-45247?

Fixed versions are available, including Full Page Cache Warmer for Magento 2 1.11.12, Full Page Cache Warmer 1.11.12.

How urgently should CVE-2026-45247 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Request A Demo

Vulnerability Intelligence

CVE-2026-45247

CriticalExploitedPublic exploit

Published May 26, 2026 · Updated Jul 24, 2026 · Also known as EUVD-2026-31837, GHSA-rg8p-9rpg-r32p

Key Facts

Patch immediately

CVE-2026-45247 is a critical-severity vulnerability (CVSS 9.3 v4) affecting Full Page Cache Warmer (Mirasvit), Full Page Cache Warmer for Magento 2.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since May 29, 2026. Public exploit code is available.
EPSS estimates a 2.1% probability of exploitation in the next 30 days.
Fixed versions are available, including Full Page Cache Warmer for Magento 2 1.11.12, Full Page Cache Warmer 1.11.12.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v4

9.3

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/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

EPSS (30-day exploit likelihood)

2.1%

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2026-45247 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Jun 3, 2026	Jun 6, 2026	Not reported
Industry KEV feed	May 29, 2026	Jun 6, 2026	Not reported
CIRCL KEV	Jun 3, 2026	Jun 6, 2026	Not reported
ENISA EUVD	Jun 3, 2026	n/a	Not reported

Required 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.

Affected Products

3 affected entries in total

Product	Affected versions	Fixed in
Full Page Cache WarmerMirasvit	See advisory	1.11.12
Full Page Cache Warmer for Magento 2	See advisory	1.11.12

Patched Releases

Full Page Cache Warmer for Magento 2

1.11.12

Full Page Cache Warmer

1.11.12

Timeline

Publicly disclosed
May 26, 2026
Added to Industry KEV feed
May 29, 2026
Added to CISA KEV
Jun 3, 2026
Added to CIRCL KEV
Jun 3, 2026
Added to ENISA EUVD
Jun 3, 2026
Last updated
Jul 24, 2026

Weakness Type

CWE-502 Deserialization of Untrusted Data

References

2 more references in the full CVE brief

FAQ

Common Questions.

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.
Affected: Full Page Cache Warmer (Mirasvit); Full Page Cache Warmer for Magento 2. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since May 29, 2026.
Yes. It was added on Jun 3, 2026 with a federal remediation due date of Jun 6, 2026.
Public exploit code is available.
Fixed versions are available, including Full Page Cache Warmer for Magento 2 1.11.12, Full Page Cache Warmer 1.11.12.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2026-45247 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.