Vulnerability record

CVE-2025-23209

Craft CMS Code Injection Vulnerability

HighExploitation confirmedCISA KEV

What should I do?

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run Craft CMS, fix it now.

CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

US federal civilian agencies must remediate by Mar 13, 2025.

Patch status

Official fix available since Sep 30, 2026

Apply the vendor's update to every affected system. Check the fixed-in versions below where known.

Basis: NVD patch reference

Patch or advisory on github.com (opens in a new tab)

Description

Craft is a flexible, user-friendly CMS for creating custom digital experiences on the web and beyond. This is an remote code execution (RCE) vulnerability that affects Craft 4 and 5 installs where your security key has already been compromised. Anyone running an unpatched version of Craft with a compromised security key is affected. This vulnerability has been patched in Craft 5.5.8 and 4.13.8. Users who cannot update to a patched version, should rotate their security keys and ensure their privacy to help migitgate the issue.

Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.

Affected products

Products affected by this vulnerability, with versions and the source of each entry
Product	Vendor	Affected versions	Fixed in	Source
Craft CMS	Craft CMS	> 4.0.0, < 4.13.8; > 5.0.0, < 5.5.8; 4.0.0; 5.0.0	4.13.8; 5.5.8	KEV

Sources: KEV = CISA Known Exploited Vulnerabilities catalog.

Intelligence timeline

Developments from the last 30 days, newest first.

CVSS scoredUpdateKEVSep 30, 2026
CVE-2025-23209 scored CVSS 8.1: Craft CMS Craft CMS, Craft CMS Code Injection Vulnerability
CISA lists this as exploited in the wild. Unpatched Craft CMS systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database
Patch releasedUpdateKEVSep 30, 2026
Patch released for CVE-2025-23209: Craft CMS Craft CMS, Craft CMS Code Injection Vulnerability
An official fix is now available for Craft CMS Craft CMS. This vulnerability is being exploited, so apply it promptly.
Basis: NVD patch reference

1 earlier event is available with a subscription. See plans.

Coverage

We have not published a story about this vulnerability yet.

References

github.com https://github.com/craftcms/cms/security/advisories/GHSA-x684-96hh-833x
nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2025-23209
craftcms.com https://craftcms.com/knowledge-base/securing-craft#keep-your-secrets-secret
github.com https://github.com/craftcms/cms/commit/e59e22b30c9dd39e5e2c7fe02c147bcbd004e603
cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-23209