CVE-2020-27846
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.
Key facts
- CVSS score
- 9.8 (v3.1)
- Severity
- CRITICAL
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
- CWE-115
- EPSS score
- 4.9% (92th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2021-1260)
- Published
- December 21, 2020
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2021-1260 in the EU Vulnerability Database. Last updated in EUVD on August 4, 2024.
View on the EU Vulnerability DatabaseAffected products
- fedoraproject / fedora
- fedoraproject / fedora
- grafana / grafana
- redhat / enterprise linux
- redhat / openshift container platform
- redhat / openshift container platform
- redhat / openshift service mesh
- saml project / saml
Certified products that may be affected
23 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.
- Red Hat Enterprise Linux 8 NSS Cryptographic Module - Red Hat, Inc. - FIPS 140 5513 - active
- Red Hat Enterprise Linux 8 Kernel Cryptographic API - Red Hat, LLC - FIPS 140 5461 - active
- Red Hat Enterprise Linux 8 Kernel Cryptographic API - Red Hat, Inc. - FIPS 140 5089 - active
- Red Hat Enterprise Linux 8 OpenSSL Cryptographic Module - Red Hat®, Inc. - FIPS 140 4642 - historical
- Red Hat Enterprise Linux 8 NSS Cryptographic Module - Red Hat®, Inc. - FIPS 140 4458 - historical
See all 23 in the Security Certifications Explorer.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1907670(Issue Tracking, Patch, Third Party Advisory)
- https://github.com/crewjam/saml/security/advisories/GHSA-4hq8-gmxx-h6w9(Third Party Advisory)
- 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/(Vendor Advisory)
- 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/(Exploit, Third Party Advisory)
- https://security.netapp.com/advisory/ntap-20210205-0002/(Third Party Advisory)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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