low
CVE-2026-49826
Concourse is a container-based automation system written in Go.
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/concourse/concourse | < 1.6.1-0.20260526150512-ac60be5f0435 | 1.6.1-0.20260526150512-ac60be5f0435 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-8w27-c4vc-88q9
- https://github.com/concourse/concourse/security/advisories/GHSA-8w27-c4vc-88q9
- https://github.com/concourse/concourse/commit/ac60be5f0435b6592f5a4fcc089050d72ad2452c
- https://github.com/concourse/concourse/releases/tag/v8.2.3