CVE-2020-27846
9.8
CRITICAL · CVSS 3.1 · EPSS 4.9% (pctl 92)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 4.93% — more likely to be exploited than 92% of all CVEs |
| Weakness | CWE-115 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2020-12-21 |
| Last modified | 2026-06-17 |
Affected (6)
| Vendor | Product |
|---|---|
| fedoraproject | fedora |
| grafana | grafana |
| redhat | enterprise linux |
| redhat | openshift container platform |
| redhat | openshift service mesh |
| saml project | saml |
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/
- https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/
- https://security.netapp.com/advisory/ntap-20210205-0002/
- 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/
- https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/
- https://security.netapp.com/advisory/ntap-20210205-0002/
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