CVE-2026-85626
High
Description
git-mcp-server 2.15.1 contains an argument injection vulnerability in the ref and object parameters of git_log, git_diff, and git_show tools that lack leading-dash validation. Attackers can inject git command-line options like --output= to write files outside the repository to arbitrary paths accessible by the process.
SeverityHigh
CVSS7.5
Exploit probability—
ProductCyanheads Git-mcp-server
PublishedSep 4, 2026
First seenSep 4, 2026
Weakness typeCWE-88CWE-88
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cyanheads git-mcp-server | v ≤ 2.15.3 | — |
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