CVE-2026-114094: dulwich 0 to before 1.2.9

Affected technology

dulwich · 0 to before 1.2.9
jelmer

Description’s affected range: before 1.2.9 fails to validate DOS drive letter prefixes in Git tree path elements on Windows

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · Passive user interaction

What an attacker can do

Attackers can craft a malicious repository with a tree entry named 'C:' that bypasses NTFS validation and writes files outside the worktree to achieve remote code execution. Vendor/CNA’s CVSS 4.0 assessment (base score 8.7/10) rates confidentiality, integrity and availability impact as high.