CVE-2026-40162: Bugsink

High severity, CVSS 7.1. EPSS: 0.5% chance of exploitation in the next 30 days.

Bugsink is a self-hosted error tracking tool. In 2.1.0, an authenticated file write vulnerability was identified in Bugsink 2.1.0 in the artifact bundle assembly flow. A user with a valid authentication token could cause the application to write attacker-controlled content to a filesystem location writable by the Bugsink process. This vulnerability is fixed in 2.1.1.

Affected products

• Bugsink Bugsink: version 2.1.0 only

Published 2026-04-10. Last modified 2026-06-17.