CVE-2025-23209: Craft CMS has a potential RCE with a compromised security key
(updated )
This is an RCE vulnerability that affects Craft 4 and 5 installs where your security key has already been compromised.
https://craftcms.com/knowledge-base/securing-craft#keep-your-secrets-secret
Anyone running an unpatched version of Craft with a compromised security key is affected.
References
- craftcms.com/knowledge-base/securing-craft
- github.com/advisories/GHSA-x684-96hh-833x
- github.com/craftcms/cms
- github.com/craftcms/cms/commit/e59e22b30c9dd39e5e2c7fe02c147bcbd004e603
- github.com/craftcms/cms/security/advisories/GHSA-x684-96hh-833x
- nvd.nist.gov/vuln/detail/CVE-2025-23209
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-23209
Code Behaviors & Features
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