SB2026061958 - SUSE update for cosign
Published: June 19, 2026
Security Bulletin ID
SB2026061958
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Security features bypass (CVE-ID: CVE-2026-39395)
CWE-ID: CWE-254 - Security Features
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to a logic flaw in the error handling of the predicate type validation in cosign verify-blob-attestation. A remote attacker can cause the application to trust the unexpected attestation type.
Remediation
Install update from vendor's website.