Vulnerability · Published Feb 9, 2026 · Assigned by GitHub_M

CVE-2026-25498Craft has a potential authenticated Remote Code Execution via malicious attached Behavior

High 8.6

In plain English

A high-severity security flaw in cms from craftcms. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)8.6High

Exploit odds (30 days)1.1%top 34.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Craft is a platform for creating digital experiences. In versions 4.0.0-RC1 through 4.16.17 and 5.0.0-RC1 through 5.8.21, a Remote Code Execution (RCE) vulnerability exists in Craft CMS where the assembleLayoutFromPost() function in src/services/Fields.php fails to sanitize user-supplied configuration data before passing it to Craft::createObject(). This allows authenticated administrators to inject malicious Yii2 behavior configurations that execute arbitrary system commands on the server. This vulnerability represents an unpatched variant of the behavior injection vulnerability addressed in CVE-2025-68455, affecting different endpoints through a separate code path. This vulnerability is fixed in 5.8.22.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	craftcms/cms	5.8.22	GHSA-7jx7-3846-m7w7
Packagist	craftcms/cms	4.16.18	GHSA-7jx7-3846-m7w7

Affected products (as reported)

Vendor	Product	Versions
craftcms	cms	>= 5.0.0-RC1, < 5.8.22>= 4.0.0-RC1, < 4.16.18

Weakness: CWE-470 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

https://github.com/craftcms/cms/security/advisories/GHSA-7jx7-3846-m7w7 x_refsource_CONFIRM
https://github.com/craftcms/cms/commit/395c64f0b80b507be1c862a2ec942eaacb353748 x_refsource_MISC
https://github.com/craftcms/cms/releases/tag/5.8.22 x_refsource_MISC