Is CVE-2026-31836 actively exploited?

No active exploitation of CVE-2026-31836 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-31836 be exploited remotely?

Yes. CVE-2026-31836 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-31836?

CVE-2026-31836 has a CVSS score of 8.1 (HIGH).

HOME VULNERABILITIESCVE-2026-31836

HIGH

CVE-2026-31836

CWE-269Published: March 20, 2026· Updated: Mar 24, 2026

8.1

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:7.8th

Official Description

Checkmate is an open-source, self-hosted tool designed to track and monitor server hardware, uptime, response times, and incidents in real-time with beautiful visualizations. In versions from 3.5.1 and prior, a mass assignment vulnerability in Checkmate's user profile update endpoint allows any authenticated user to escalate their privileges to superadmin, bypassing all role-based access controls. An attacker can modify their user role to gain complete administrative access to the application, including the ability to view all users, modify critical configurations, and access sensitive system data. At time of publication, there are no publicly available patches.

NVD Source

Technical Analysis

CVE-2026-31836 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), with a CVSS base score of 8.1.