Is CVE-2026-31857 actively exploited?

No active exploitation of CVE-2026-31857 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-31857 be exploited remotely?

Yes. CVE-2026-31857 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-31857?

CVE-2026-31857 has a CVSS score of 8.8 (HIGH).

HOME VULNERABILITIESCVE-2026-31857

HIGH

CVE-2026-31857

CWE-94Published: March 11, 2026· Updated: Mar 17, 2026

8.8

CVSS v3.1

EPSS:0.18%probability of exploitation in 30 daysPercentile:39.9th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-31857 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.