{"cve":"CVE-2026-49826","nvd":{"published":"2026-08-14T17:18:27.007","modified":"2026-09-18T20:05:53.723","status":"Awaiting Analysis","description":"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_v4":{"vector":"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","score":0.0},"cvss_v3":null,"cwes":["CWE-601"],"references":["https://github.com/concourse/concourse/commit/ac60be5f0435b6592f5a4fcc089050d72ad2452c","https://github.com/concourse/concourse/releases/tag/v8.2.3","https://github.com/concourse/concourse/security/advisories/GHSA-8w27-c4vc-88q9"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:48:17.459049833+00:00"},"epss":{"cve":"CVE-2026-49826","score":0.00526,"percentile":0.44606,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-8w27-c4vc-88q9","url":"https://osv.dev/vulnerability/GHSA-8w27-c4vc-88q9","summary":"Concourse login flow has an open redirect issue","modified":"2026-08-19T09:55:28.952979039Z","packages":[{"ecosystem":"Go","name":"github.com/concourse/concourse","purl":"pkg:golang/github.com/concourse/concourse","ranges":["<1.6.1-0.20260526150512-ac60be5f0435"],"fixed":["1.6.1-0.20260526150512-ac60be5f0435"]}]},{"id":"GO-2026-5866","url":"https://osv.dev/vulnerability/GO-2026-5866","summary":"Concourse login flow has an open redirect issue in github.com/concourse/concourse","modified":"2026-08-19T09:55:28.952979039Z","packages":[{"ecosystem":"Go","name":"github.com/concourse/concourse","purl":"pkg:golang/github.com/concourse/concourse","ranges":["<1.6.1-0.20260526150512-ac60be5f0435"],"fixed":["1.6.1-0.20260526150512-ac60be5f0435"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}