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| Vulnerability ID | VCID-4wkr-jx1w-77hn |
| Aliases |
CVE-2026-31857
GHSA-fp5j-j7j4-mcxc |
| Summary | CraftCMS has an RCE vulnerability via relational conditionals in the control panel 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 5.99 release to mitigate the issue. |
| Status | Published |
| Exploitability | None |
| Weighted Severity | None |
| Risk | None |
| Affected and Fixed Packages | Package Details |
| System | Score | Found at |
|---|---|---|
| There are no known severity scores. | ||
| Reference id | Reference type | URL |
|---|---|---|
| https://github.com/craftcms/cms | ||
| https://github.com/craftcms/cms/commit/8d4903647dcfd31b8d40ed027e27082013347a80 | ||
| CVE-2026-31857 | https://nvd.nist.gov/vuln/detail/CVE-2026-31857 | |
| GHSA-fp5j-j7j4-mcxc | https://github.com/advisories/GHSA-fp5j-j7j4-mcxc | |
| GHSA-fp5j-j7j4-mcxc | https://github.com/craftcms/cms/security/advisories/GHSA-fp5j-j7j4-mcxc |
No EPSS data available for this vulnerability.
| Date | Actor | Action | Source | VulnerableCode Version |
|---|---|---|---|---|
| 2026-06-02T04:51:41.586444+00:00 | GitLab Importer | Import | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/craftcms/cms/CVE-2026-31857.yml | 38.6.0 |