Concourse login flow has an open redirect issue (CVE-2026-49826)
Description
Concourse versions prior to 8.2.3 contain an open redirect vulnerability in the login flow. An attacker can craft a URL that redirects users from the Concourse web server to arbitrary external sites. This vulnerability could facilitate phishing attacks aimed at stealing user credentials. The issue has been fixed in version 8.2.3. No known workarounds exist.
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Concourse, a container-based automation system written in Go, had an open redirect vulnerability in its login flow before version 8.2.3. This flaw allowed attackers to send crafted URLs that redirect users from the Concourse web interface to any external site, potentially enabling phishing attacks. The vulnerability was addressed and fixed in version 8.2.3.
Potential Impact
The vulnerability enables attackers to redirect users to arbitrary external websites via crafted URLs, which can be exploited in phishing campaigns to steal user credentials. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade Concourse to version 8.2.3 or later to remediate this vulnerability. No workarounds are available, so applying the official fix is necessary.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- BIT-concourse-2026-49826
- Osv Schema Version
- 1.6.2
- Aliases
- ["CVE-2026-49826"]
- Ecosystems
- ["Bitnami"]
- Database Specific Severity
- None
Threat ID: 6a85b4b3acd9273b49251505
Added to database: 08/19/2026, 13:50:43 UTC
Last enriched: 08/19/2026, 14:13:10 UTC
Last updated: 10/04/2026, 10:02:28 UTC
Views: 25
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