Craft CMS Code Injection Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2026-03-20
• EPSS: 100% chance of exploitation in the next 30 days (higher than 100% of CVEs)
• Critical severity: CVSS 10.0

[ Description ]Official description

Craft is a flexible, user-friendly CMS for creating custom digital experiences on the web and beyond. Starting from version 3.0.0-RC1 to before 3.9.15, 4.0.0-RC1 to before 4.14.15, and 5.0.0-RC1 to before 5.6.17, Craft is vulnerable to remote code execution. This is a high-impact, low-complexity attack vector. This issue has been patched in versions 3.9.15, 4.14.15, and 5.6.17, and is an additional fix for CVE-2023-41892.

CISA: Craft CMS contains a code injection vulnerability that allows a remote attacker to execute arbitrary code.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 3 Apr 2026): Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

• Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ References ]References

• github.com/craftcms/cms/blob/3.x/CHANGELOG.mdProductRelease Notes
• github.com/craftcms/cms/blob/4.x/CHANGELOG.mdProductRelease Notes
• github.com/craftcms/cms/blob/5.x/CHANGELOG.mdProductRelease Notes
• github.com/craftcms/cms/commit/e1c85441fa47eeb7c688c2053f25419bc0547b47Patch
• github.com/craftcms/cms/security/advisories/GHSA-f3gw-9ww9-jmc3Vendor Advisory
• sensepost.com/blog/2025/investigating-an-in-the-wild-campaign-using-rce-in-craftcmsExploitPress/Media Coverage
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource