SB2026051891 - Improper Handling of Case Sensitivity in The Update Framework (TUF)

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2026051891

SB2026051891 - Improper Handling of Case Sensitivity in The Update Framework (TUF)

Published: May 18, 2026

Security Bulletin ID SB2026051891
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Handling of Case Sensitivity (CVE-ID: N/A)

CWE-ID: CWE-178 - Improper Handling of Case Sensitivity

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to influence target authorization decisions.

The vulnerability exists due to improper handling of case sensitivity in DelegatedRole._is_target_in_pathpattern when matching delegation path patterns on Windows. A remote attacker can control a delegated role with a case-colliding path pattern to influence target authorization decisions.

Exploitation requires a repository configuration with path-based delegations whose patterns differ only by case, the attacker-controlled delegation to be visited before the legitimate delegation, and a client running on Windows.


Remediation

Install update from vendor's website.

References