High 8.1Published Mar 11, 2026

CVE-2026-31857CraftCMS has an RCE vulnerability via relational conditionals in the control panel

Updated under an hour ago (Oct 28, 2026, 3:30 AM ET)

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Every CVE for craftcms cms

Exploited in the last 30 days

Craft is a content management system (CMS). Prior to 5.9.9 and 4.17.4, a Remote Code Execution vulnerability exists in the Craft CMS 5 conditions system. The BaseElementSelectConditionRule::getElementIds() method passes user-controlled string input through renderObjectTemplate() -- an unsandboxed Twig rendering function with escaping disabled. Any authenticated Control Panel user (including non-admin roles such as Author or Editor) can achieve full RCE by sending a crafted condition rule via standard element listing endpoints. This vulnerability requires no admin privileges, no special permissions beyond basic control panel access, and bypasses all production hardening settings (allowAdminChanges: false, devMode: false, enableTwigSandbox: true). Users should update to the patched 5.9.9 or 4.17.4 release to mitigate the issue.

CVSS: 8.1 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
Weakness (CWE): CWE-94
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 12, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

craftcms cms craftcms:cms (from the name)	from 5.0.0-RC1, < 5.9.9; from 4.0.0-beta.1, < 4.17.4	CNA record
craftcms craft_cms craftcms:craft_cms	from 4.0.0.1 before 4.17.4; from 5.0.1 before 5.9.9; 4.0.0; 4.0.0; 4.0.0; 4.0.0; 4.0.0; 4.0.0; and 4 more ranges	NVD

References

References

https://github.com/craftcms/cms/security/advisories/GHSA-fp5j-j7j4-mcxc	x-refsource-confirm, patch, vendor-advisory
https://github.com/craftcms/cms/commit/8d4903647dcfd31b8d40ed027e27082013347a80	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.