CVE-2025-23209
Craft CMS Code Injection Vulnerability
Craft CMS Craft CMS
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.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 20 February 2025. US federal agencies were required to remediate it by 13 March 2025.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 21.6%, which is higher than 97.6% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Frequently asked questions
Is CVE-2025-23209 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2025-23209.
What does CVE-2025-23209 affect?
CVE-2025-23209 affects Craft CMS Craft CMS. 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.
How severe is CVE-2025-23209?
CVE-2025-23209 is rated HIGH with a CVSS base score of 8. EPSS puts the probability of exploitation in the next 30 days at 21.6%, higher than 97.6% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 13 March 2025.
How should organisations respond to CVE-2025-23209?
Apply the vendor patch for Craft CMS Craft CMS as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.