DirectorySecurity AdvisoriesPricing
/
Sign in
Security Advisories

CVE-2020-27847

NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-27847

Severity

9.8

Critical

CVSS V3

Eliminate CVEs with Chainguard hardened images

Build, ship, and run secure software with minimal, hardened container images — rebuilt from source daily and guarded under our industry-leading remediation SLA.

Start for free

Description

A vulnerability exists in the SAML connector of the github.com/dexidp/dex library used to process SAML Signature Validation. This flaw allows an attacker to bypass SAML authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. This flaw affects dex versions before 2.27.0.

References

  • https://nvd.nist.gov/vuln/detail/CVE-2020-27847
  • https://github.com/advisories/GHSA-2x32-jm95-2cpx
  • https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/
  • https://bugzilla.redhat.com/show_bug.cgi?id=1907732
  • https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5

Affected packages

The trusted source for open source

Talk to an expert
PrivacyTerms

Product

Chainguard ContainersChainguard LibrariesChainguard VMsIntegrationsPricing

Solutions

FedRAMPPCI DSSCMMC 2.0Golden ImagesCVE RemediationPublic Sector

Customers

Customer StoriesChainguard Reviews

Resources

Events & WebinarsSupply Chain Security 101Chainguard CoursesDocumentationTrust CenterChainguard Slack Community

Company

About UsBlogPartnersNewsroomCareersLegal
© 2026 Chainguard, Inc. All Rights Reserved.
Chainguard® and the Chainguard logo are registered trademarks of Chainguard, Inc. in the United States and/or other countries.
The other respective trademarks mentioned on this page are owned by the respective companies and use of them does not imply any affiliation or endorsement.