EUVD Vulnerability Catalog
EUVD-2026-71018
Severity: CRITICAL
Base Score: 9.3
CVSS Version: 4.0
Vulnerability Description
Traefik versions before v2.11.55 and versions v3.0.0 through v3.7.10 contain an authentication bypass vulnerability in the digestAuth middleware where unknown usernames receive an empty secret instead of rejection. Attackers can compute a valid digest response using the empty secret and arbitrary credentials to bypass authentication on any digestAuth-protected route without a valid username or password.
CVSS Vector Analysis
Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
▪
Attack Vector (AV): Network
▪
Attack Complexity (AC): Low
▪
Attack Requirements (AT): None
▪
Privileges Required (PR): None
▪
User Interaction (UI): None
▪
Vulnerability Confidentiality Impact (VC): High
▪
Vulnerability Integrity Impact (VI): High
▪
Vulnerability Availability Impact (VA): High
▪
Subsequent Confidentiality Impact (SC): None
▪
Subsequent Integrity Impact (SI): None
▪
Subsequent Availability Impact (SA): None
Affected Vendors & Systems
Vendor
traefik
References & Advisory Links
Metadata Profile
Database Authority
European Union Agency for Cybersecurity (ENISA) EUVD
Assigner
VulnCheck
EPSS Probability
0
Known Aliases
GHSA-4v96-rv7j-9wmr
CVE-2026-85595
Published On
2026-09-04
Last Updated
2026-09-05