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Known exploited vulnerability

CVE-2025-23209

highCVSS 3.1 8.1In CISA KEVEPSS 22%Published · craftcms

The short answer

CVE-2025-23209 affects craftcms cms and is rated high (CVSS 8.1). CISA added it to the Known Exploited Vulnerabilities catalog on 2025-02-20: attackers are using it, so patch it first. Fixed versions are published for craftcms/cms (5.5.8, 4.13.8).

What it is

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.

Weakness: CWE-94.

Severity

8.1 high

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploited (CISA KEV)

Yes, since Feb 20, 2025

Federal due date Mar 13, 2025

EPSS, next 30 days

22%

Higher than 98% of scored CVEs

How it can be exploited

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Affected packages and fixed versions

PackageEcosystemFixed inAdvisory
craftcms/cmsPackagist5.5.8, 4.13.8GHSA-x684-96hh-833x

Is it in your code? Drop your lockfile into the free vulnerability check, or let vulnerability watch check your repository every day and open the upgrade as a pull request.

Affected products

cms. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2025-23209 being exploited?

Yes. CISA added CVE-2025-23209 to its Known Exploited Vulnerabilities catalog on 2025-02-20, with a federal remediation due date of 2025-03-13.

How do I fix CVE-2025-23209?

Upgrade to a fixed version: craftcms/cms (Packagist) 5.5.8 or 4.13.8. CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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