Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2020-27847

28
FAUCET Score

CVE-2020-27847 is a critical vulnerability in the SAML connector of github.com/dexidp/dex versions prior to 2.27.0, allowing attackers to bypass SAML authentication. With a CVSS score of 9.8, this flaw is easily exploitable over the network without user interaction, posing significant risks to confidentiality, integrity, and availability. Despite its severity, there is currently no evidence of active exploitation, public exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.27.0CPE matchmatch criteria
cpe:2.3:a:linuxfoundation:dex:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.72%
Probability of exploitation in next 30 days
EPSS Percentile
75.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0172 is in the 63rd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/dexidp/dexFixed in: 2.27.0
redhatend of lifevia redhat_api
Product: Red Hat Advanced Cluster Management for Kubernetes 2Fixed in: rhacm2/observatorium-rhel8

Vendor Advisories (2)

goGHSA-2x32-jm95-2cpxcritical

Authentication Bypass in dex

Dec 20, 2021
redhatCVE-2020-27847Critical

dexidp/dex: authentication bypass in saml authentication

Dec 15, 2020

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
github.com / dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5
PatchThird Party Advisory
mattermost.com / blog/coordinated-disclosure-go-xml-vulnerabilities
Vendor Advisory