Which products and versions are affected by CVE-2025-23209?

Affected: Craft CMS (Craftcms) versions 4.0.0, 4.0.0-rc1, 4.0.0-rc2, 4.0.0-rc3, 5.0.0, 5.0.0-rc1; craftcms/cms (composer) versions >= 4.0.0-RC1; cms versions >= >= 5.0.0-RC1, < 5.5.5. The full list is in the CVE brief.

Is CVE-2025-23209 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jan 17, 2025.

Is CVE-2025-23209 in the CISA KEV catalog?

Yes. It was added on Feb 20, 2025 with a federal remediation due date of Mar 13, 2025.

Is there a public exploit for CVE-2025-23209?

Public exploit code is available.

Is there a fix for CVE-2025-23209?

Fixed versions are available, including Craft CMS 4.13.8, craftcms/cms 4.13.8, craftcms/cms 5.5.5.

How urgently should CVE-2025-23209 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2025-23209

Q: What is CVE-2025-23209?

Craft is a flexible, user-friendly CMS for creating custom digital experiences on the web and beyond.

Q: Is CVE-2025-23209 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jan 17, 2025.

Q: Is CVE-2025-23209 in the CISA KEV catalog?

Yes. It was added on Feb 20, 2025 with a federal remediation due date of Mar 13, 2025.

Q: Is there a public exploit for CVE-2025-23209?

Public exploit code is available.

Q: Is there a fix for CVE-2025-23209?

Fixed versions are available, including Craft CMS 4.13.8, craftcms/cms 4.13.8, craftcms/cms 5.5.5.

Q: How urgently should CVE-2025-23209 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

HighExploitedPublic exploit

Craft CMS has a potential RCE with a compromised security key

Published Jan 21, 2025 · Updated Aug 12, 2026 · Also known as GHSA-x684-96hh-833x

Key Facts

Patch immediately

CVE-2025-23209 is a high-severity vulnerability (CVSS 8.1 v3.1) affecting Craft CMS (Craftcms), craftcms/cms (composer), cms.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jan 17, 2025. Public exploit code is available.
EPSS estimates a 22% probability of exploitation in the next 30 days.
Fixed versions are available, including Craft CMS 4.13.8, craftcms/cms 4.13.8, craftcms/cms 5.5.5.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

8.1

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

EPSS (30-day exploit likelihood)

22%

Higher than 97.6% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2025-23209 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	Feb 20, 2025	Mar 13, 2025	Not reported
Industry KEV feed	Jan 17, 2025	Mar 13, 2025	Not reported
CIRCL KEV	Feb 20, 2025	Mar 13, 2025	Not reported
ENISA EUVD	Feb 20, 2025	n/a	Not reported

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

Affected Products

9 affected entries in total

Product	Affected versions	Fixed in
Craft CMSCraftcms	4.0.0, 4.0.0-rc1, 4.0.0-rc2, 4.0.0-rc3, 5.0.0, 5.0.0-rc1	4.13.8
craftcms/cmscomposer	>= 4.0.0-RC1	4.13.8
cms	>= >= 5.0.0-RC1, < 5.5.5	n/a

Patched Releases

Craft CMS

4.13.8

craftcms/cms

4.13.8, 5.5.5, 5.5.8

Timeline

Added to Industry KEV feed
Jan 17, 2025
Publicly disclosed
Jan 21, 2025
Added to CISA KEV
Feb 20, 2025
Added to CIRCL KEV
Feb 20, 2025
Added to ENISA EUVD
Feb 20, 2025
Last updated
Aug 12, 2026

Weakness Type

CWE-94 Improper Control of Generation of Code ('Code Injection')

References

5 more references in the full CVE brief

FAQ

Common Questions.

Craft is a flexible, user-friendly CMS for creating custom digital experiences on the web and beyond.
Affected: Craft CMS (Craftcms) versions 4.0.0, 4.0.0-rc1, 4.0.0-rc2, 4.0.0-rc3, 5.0.0, 5.0.0-rc1; craftcms/cms (composer) versions >= 4.0.0-RC1; cms versions >= >= 5.0.0-RC1, < 5.5.5. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jan 17, 2025.
Yes. It was added on Feb 20, 2025 with a federal remediation due date of Mar 13, 2025.
Public exploit code is available.
Fixed versions are available, including Craft CMS 4.13.8, craftcms/cms 4.13.8, craftcms/cms 5.5.5.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2025-23209 Running On Your Attack Surface?

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