{"cve":"CVE-2018-15798","nvd":{"published":"2018-12-19T22:29:00.547","modified":"2026-06-17T01:43:07.413","status":"Modified","description":"Pivotal Concourse Release, versions 4.x prior to 4.2.2, login flow allows redirects to untrusted websites. A remote unauthenticated attacker could convince a user to click on a link using the oAuth redirect link with an untrusted website and gain access to that user's access token in Concourse.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","score":5.4},"cwes":["CWE-601"],"references":["https://pivotal.io/security/cve-2018-15798","https://pivotal.io/security/cve-2018-15798"],"products":["pivotal_software:concourse"],"source":"nvd","synced_at":"2026-10-19T20:54:36.112582389+00:00"},"epss":{"cve":"CVE-2018-15798","score":0.01145,"percentile":0.6675,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-9689-rx4v-cqgc","url":"https://osv.dev/vulnerability/GHSA-9689-rx4v-cqgc","summary":"Pivotal Concourse Open Redirect in Login Flow","modified":"2023-11-08T03:59:58.353225Z","packages":[{"ecosystem":"Go","name":"github.com/concourse/concourse","purl":"pkg:golang/github.com/concourse/concourse","ranges":["<5.2.8"],"fixed":["5.2.8"]},{"ecosystem":"Go","name":"github.com/concourse/concourse","purl":"pkg:golang/github.com/concourse/concourse","ranges":[">=5.3.0 <5.5.10"],"fixed":["5.5.10"]},{"ecosystem":"Go","name":"github.com/concourse/concourse","purl":"pkg:golang/github.com/concourse/concourse","ranges":[">=5.6.0 <5.8.1"],"fixed":["5.8.1"]}]}],"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."]}