CVE-2026-27735 affects Model Context Protocol Servers (mcp-server-git versions prior to 2026.1.14), where a path traversal vulnerability exists in the git_add tool. This flaw allows attackers to stage files outside the intended repository boundaries by using relative paths with "../" sequences, due to the tool's use of GitPython's repo.index.add() instead of the Git CLI. The vulnerability has a CVSS score of 6.4 (Medium), indicating a low attack complexity and network vector, with potential for high impact on system integrity and confidentiality. While no official exploit code is publicly available, community discussion suggests potential for exfiltrating secrets, and users are advised to upgrade to version 2026.1.14 or newer.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2026.1.14CPE matchmatch criteria | cpe:2.3:a:lfprojects:model_context_protocol_servers:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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