None 0.0Published Aug 14, 2026

CVE-2026-49826Concourse login flow has an open redirect issue

Updated under an hour ago (2026-10-19 09:10 UTC)

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It affects concourse. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 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.

CVSS: 0.0 NONE (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-601
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Aug 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

concourse concourse concourse:concourse (from the name)	before 8.2.3	CNA record

References

https://github.com/concourse/concourse/security/advisories/GHSA-8w27-c4vc-88q9x-refsource-confirm
https://github.com/concourse/concourse/commit/ac60be5f0435b6592f5a4fcc089050d72ad2452cx-refsource-misc
https://github.com/concourse/concourse/releases/tag/v8.2.3x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.