CVE-2026-49826: Concourse

None severity, CVSS 0.0. EPSS: 0.5% chance of exploitation in the next 30 days.

Concourse is a container-based automation system written in Go. Prior to version 8.2.3, an attacker is able to craft and send a user a URL that will redirect the user from the Concourse web server to any other site. This could be used in a phishing attack to steal user's credentials. This has been fixed in 8.2.3. No known workarounds are available.

Affected products

• Concourse Concourse: before 8.2.3 (fixed in 8.2.3)

Published 2026-08-14. Last modified 2026-09-18.