CVE-2020-27847

CRITICAL

dex < 2.27.0 - SAML Authentication Bypass via Signature Validation

Title source: llm
STIX 2.1

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 (3)

Core 3
Core References
Issue Tracking, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1907732
Patch, Third Party Advisory x_refsource_misc
https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5

Scores

CVSS v3 9.8
EPSS 0.0172
EPSS Percentile 74.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-228
Status published
Products (2)
dexidp/dex 0 - 2.27.0Go
linuxfoundation/dex < 2.27.0
Published May 28, 2021
Tracked Since Feb 18, 2026