CISA Warns of Craft CMS Code Injection Flaw Exploited in Active Attacks
The Cybersecurity and Infrastructure Security Agency (CISA) has added a critical vulnerability affecting Craft CMS to its Known Exploited Vulnerabilities (KEV) catalog. This vulnerability, identified as CVE-2025-32432, involves a code injection flaw…
The Cybersecurity and Infrastructure Security Agency (CISA) has added a critical vulnerability affecting Craft CMS to its Known Exploited Vulnerabilities (KEV) catalog. This vulnerability, identified as CVE-2025-32432, involves a code injection flaw currently being exploited in active attacks.
The vulnerability carries a maximum CVSS v3.1 severity score of 10.0, marking it as critical. It allows unauthenticated remote attackers to execute arbitrary code on affected servers. This vulnerability affects multiple major versions of Craft CMS, specifically the 3.x, 4.x, and 5.x release branches.
The issue arises from the improper handling of untrusted input, classified under CWE-94 as the improper control of code generation. It exploits an insecure deserialization issue within the asset transform generation feature of Craft CMS. Attackers can inject a custom PHP object that the application unsafely deserializes.
The attack involves placing a malicious PHP payload into a session file via a crafted URL request and abusing the Yii framework behavior gadget chain, targeting the PhpManager component on the generate-transform endpoint. This results in full remote code execution capabilities.
This vulnerability, identified as CVE-2025-32432, involves a code injection flaw currently being exploited in active attacks.
Security updates have been released to address the insecure deserialization flaw. The vulnerability impacts Craft CMS versions ranging from 3.0.0 through 3.9.14, 4.0.0 through 4.14.14, and 5.0.0 through 5.6.16. Administrators must urgently upgrade installations to the patched versions, which include releases 3.9.15, 4.14.15, and 5.6.17.
Under Binding Operational Directive (BOD) 22-01, Federal Civilian Executive Branch agencies are mandated to secure their networks against this threat. CISA added this vulnerability to the KEV catalog on Mon, Mar 20, 2026, with a remediation deadline of Mon, Apr 3, 2026.
Organizations should use the KEV catalog for vulnerability management prioritization. Administrators must apply vendor patches, follow cloud service guidance, or discontinue product use if immediate mitigations are unavailable.
Based on reporting by GBHackers.
