Checkmate

v3.9.2 Security

This release includes 2 security fixes for security teams reviewing exposed deployments.

Published 19d Monitoring & Metrics

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✓ No known CVEs patched

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This release patches 2 known CVEs

Topics

good-first-contribution good-first-project incident infrastructure infrastructure-monitoring mui

+11 more

mui-material server-monitor server-monitoring server-monitoring-tools statuspage uptime uptime-checker uptime-monitor uptime-monitoring uptime-status uptimerobot

Affected surfaces

auth rce_ssrf

Summary

AI summary

GHSA-3m74-8cg9-rp8j, GHSA-4c6j-p2cv-wf56, and Node 20 EOL removal update server images to Node 22.

Full changelog

Security

[x] Status pages: public payloads now use a strict allowlist of monitor fields — credentials and internal configuration are never sent to visitors (GHSA-3m74-8cg9-rp8j)
[x] Monitor advanced matching now uses RE2 with tightened regex validation — fixes ReDoS via user-controlled regex (GHSA-4c6j-p2cv-wf56)

Fixes

[x] Docker: server images moved from Node 20 (EOL) to Node 22 — fixes broken image builds caused by re2 native compilation
[x] Added root .dockerignore so host node_modules and .env files no longer leak into image builds
[x] New unit suite covering the public status-page payload

Breaking Changes

Docker server images moved from Node 20 (EOL) to Node 22 — requires rebuilds.

Security Fixes

GHSA-3m74-8cg9-rp8j – Status pages now use a strict allowlist, preventing credentials and internal config leakage.
GHSA-4c6j-p2cv-wf56 – Monitor advanced matching switched to RE2 with tightened regex validation, fixing ReDoS via user‑controlled regex.

View diff on GitHub

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About Checkmate

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. Don't be shy, join here: https://discord.com/invite/NAb6H3UTjK :)

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