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archive/Patch now/AIR-2026-0976
closedclosed 26 Feb 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-27735: Path traversal vulnerability in Model Context Protocol git server

mcp-server-git

The Model Context Protocol git server tool failed to validate file paths within repository boundaries, allowing path traversal using relative sequences. Users have been advised to upgrade to version 2026.1.14 or newer.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
6.4
EPSS
<0.01 · top 72% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
26 Feb 2026
last update
26 Feb 2026
CVE ids
CVE-2026-27735other records

Timeline · 1

  1. 26 Feb 2026CVE-2026-27735: Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP).

Sources · 1

Advisories and databases

  1. 2026-02-26
    CVE-2026-27735: Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP).
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-27735

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
mcppath-traversal
dates
happened 26 Feb 2026 · first reported 26 Feb 2026
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 10:04Z · updated 2026-10-18 10:04Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2026-27735: Path traversal vulnerability in Model Context Protocol git server

https://gcdradar.vercel.app/incidents/cve-2026-27735-path-traversal-vulnerability-in-model-context · AIR-2026-0976 · closed 2026-02-26

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-02-26
- AI role: Attack on AI
- Products: mcp-server-git
- CVE ids: CVE-2026-27735
- CVSS: 6.4

## Summary

The Model Context Protocol git server tool failed to validate file paths within repository boundaries, allowing path traversal using relative sequences. Users have been advised to upgrade to version 2026.1.14 or newer.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-02-26: CVE-2026-27735: Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP). (https://nvd.nist.gov/vuln/detail/CVE-2026-27735)

## Sources

- 2026-02-26 NVD: CVE-2026-27735: Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP). https://nvd.nist.gov/vuln/detail/CVE-2026-27735

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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