{"cve":"CVE-2020-27846","nvd":{"published":"2020-12-21T16:15:13.067","modified":"2026-06-17T03:09:43.880","status":"Modified","description":"A signature verification vulnerability exists in crewjam/saml. This flaw allows an attacker to bypass SAML Authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-115"],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=1907670","https://github.com/crewjam/saml/security/advisories/GHSA-4hq8-gmxx-h6w9","https://grafana.com/blog/2020/12/17/grafana-6.7.5-7.2.3-and-7.3.6-released-with-important-security-fix-for-grafana-enterprise/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3YUTKIRWT6TWU7DS6GF3EOANVQBFQZYI/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ICP3YRY2VUCNCF2VFUSK77ZMRIC77FEM/"],"products":["fedoraproject:fedora","grafana:grafana","redhat:enterprise_linux","redhat:openshift_container_platform","redhat:openshift_service_mesh","saml_project:saml"],"source":"nvd","synced_at":"2026-10-19T21:12:09.559580076+00:00"},"epss":{"cve":"CVE-2020-27846","score":0.04931,"percentile":0.92137,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-4hq8-gmxx-h6w9","url":"https://osv.dev/vulnerability/GHSA-4hq8-gmxx-h6w9","summary":"XML Processing error in github.com/crewjam/saml","modified":"2026-09-10T03:49:15.079722633Z","packages":[{"ecosystem":"Go","name":"github.com/crewjam/saml","purl":"pkg:golang/github.com/crewjam/saml","ranges":["<0.4.3"],"fixed":["0.4.3"]}]},{"id":"GO-2021-0058","url":"https://osv.dev/vulnerability/GO-2021-0058","summary":"Signature validation bypass due to XML processing error in github.com/crewjam/saml","modified":"2024-05-20T16:03:47Z","packages":[{"ecosystem":"Go","name":"github.com/crewjam/saml","purl":"pkg:golang/github.com/crewjam/saml","ranges":["<0.4.3"],"fixed":["0.4.3"]}]}],"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."]}