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Vulnerabilities / CVE-2020-26290

critical

CVE-2020-26290

Critical security issues in XML encoding in github.com/dexidp/dex

Published Modified CWE 347
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.6CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
GHSA9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Trivy's own label is CRITICAL. Rated critical by NVD, GHSA.

Description

Dex is a federated OpenID Connect provider written in Go. In Dex before version 2.27.0 there is a critical set of vulnerabilities which impacts users leveraging the SAML connector. The vulnerabilities enables potential signature bypass due to issues with XML encoding in the underlying Go library. The vulnerabilities have been addressed in version 2.27.0 by using the xml-roundtrip-validator from Mattermost (see related references).

Affected packages and fixed versions

SourcePackageFixed in
go::GitHub Security Advisory Gogithub.com/dexidp/dex, github.com/russellhaering/goxmldsig2.27.0 and 1 more
chainguardkots0
rapidfort alpine 3.20dexno fix listed
rapidfort alpine 3.21dexno fix listed
rapidfort alpine 3.22dexno fix listed
rapidfort alpine 3.23dexno fix listed
rapidfort alpine 3.24dexno fix listed
wolfikots0
Show all 9 entries from 8 sources
SourcePackageFixed in
go::GitHub Security Advisory Gogithub.com/dexidp/dex2.27.0
go::GitHub Security Advisory Gogithub.com/russellhaering/goxmldsig1.1.0
chainguardkots0
rapidfort alpine 3.20dexno fix listed
rapidfort alpine 3.21dexno fix listed
rapidfort alpine 3.22dexno fix listed
rapidfort alpine 3.23dexno fix listed
rapidfort alpine 3.24dexno fix listed
wolfikots0

References

All 12 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.