CVE-2025-23209
Potential RCE with a compromised security key in craft/cms
Craft CMS Code Injection Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA notes
https://github.com/craftcms/cms/security/advisories/GHSA-x684-96hh-833x ; https://nvd.nist.gov/vuln/detail/CVE-2025-23209
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.
Severity
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:HExploitation Context
as of October 17, 2026- CISA added CVE-2025-23209 to the KEV catalog 33 days after its CVE record was published. The median for entries added in 2025 is 26 days.
- It is one of 4 Craft CMS entries in the CISA KEV catalog, and one of 3 added in 2025.
- Its current EPSS score (21.8%) is higher than that of 36% of CISA KEV entries.
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| craftcms | craftcms cms | >= 5.0.0-RC1, < 5.5.5 >= 4.0.0-RC1, < 4.13.8 |
References
3 LinksRecord Details
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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.