CVE-2026-85626 git-mcp-server 2.15.1 Argument Injection via Git Ref Parameters

git-mcp-server 2.15.1 contains an argument injection vulnerability in the ref and object parameters of gitlog, gitdiff, and gitshow tools that lack leading-dash validation. Attackers can inject git command-line options like --output= to write files outside the repository to arbitrary paths...