{"id":"BIT-concourse-2026-49826","summary":"Concourse login flow has an open redirect issue","details":"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.","aliases":["CVE-2026-49826","GHSA-8w27-c4vc-88q9","GO-2026-5866"],"modified":"2026-08-19T09:55:28.952979039Z","published":"2026-08-19T08:37:55.994Z","database_specific":{"cpes":["cpe:2.3:a:pivotal_software:concourse:*:*:*:*:*:go:*:*"],"severity":"None"},"references":[{"type":"WEB","url":"https://github.com/concourse/concourse/commit/ac60be5f0435b6592f5a4fcc089050d72ad2452c"},{"type":"WEB","url":"https://github.com/concourse/concourse/releases/tag/v8.2.3"},{"type":"WEB","url":"https://github.com/concourse/concourse/security/advisories/GHSA-8w27-c4vc-88q9"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49826"}],"affected":[{"package":{"name":"concourse","ecosystem":"Bitnami","purl":"pkg:bitnami/concourse"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.2.3"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/concourse/BIT-concourse-2026-49826.json"},"severity":[{"type":"CVSS_V4","score":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}],"schema_version":"1.9.0"}