CVE-2020-27846

critical

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.

References

Advisories
More

https://security.netapp.com/advisory/ntap-20210205-0002/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ICP3YRY2VUCNCF2VFUSK77ZMRIC77FEM/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3YUTKIRWT6TWU7DS6GF3EOANVQBFQZYI/

https://github.com/crewjam/saml/security/advisories/GHSA-4hq8-gmxx-h6w9

https://bugzilla.redhat.com/show_bug.cgi?id=1907670

https://github.com/advisories/GHSA-4hq8-gmxx-h6w9

https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/

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://euvd.enisa.europa.eu/vulnerability/EUVD-2021-1260

Details

Source: Mitre, NVD

Published: 2020-12-21

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H