CVE-2026-31857

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Source
https://cve.org/CVERecord?id=CVE-2026-31857
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31857.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-31857
Aliases
Published
2026-03-11T17:30:29.092Z
Modified
2026-04-10T05:42:10.595384Z
Severity
  • 8.1 (High) CVSS_V4 - 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 CVSS Calculator
Summary
CraftCMS has an RCE vulnerability via relational conditionals in the control panel
Details

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.

Database specific 
{
    "cwe_ids": [
        "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31857.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/craftcms/cms

Affected ranges

Type
GIT
Repo
https://github.com/craftcms/cms
Events
Introduced
04755d93f86d07cc183db47db8a0eee106892e30
Fixed
74eb5d3a9ffa935df1a4fc2b6ddb1042d9f8e582
Database specific 
{
    "versions": [
        {
            "introduced": "5.0.0-RC1"
        },
        {
            "fixed": "5.9.9"
        }
    ]
}
Type
GIT
Repo
https://github.com/craftcms/cms
Events
Introduced
2c20eed81e34c35b880ddd9e1bc61c9cfd9c6690
Fixed
5020fa5be830af712694f9f8164599a1789cc094
Database specific 
{
    "versions": [
        {
            "introduced": "4.0.0-beta.1"
        },
        {
            "fixed": "4.17.4"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31857.json"