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  4. CVE 2026 88066 claude desktop uncontrolled search path enables
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Back to active CVEs
High · CVSS 7.5CVE-2026-88066

Claude Desktop: Uncontrolled Search Path Enables Arbitrary Code Execution via Malicious Git ExecutableCVE-2026-88066

Answer in brief

CVE-2026-88066 records a High severity (CVSS 7.5) vulnerability in Claude Desktop: Uncontrolled Search Path Enables Arbitrary Code Execution via Malicious Git Executable. The current sources do not mark it as known exploited. The current feed maps anthropics/claude-code (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 3, 2026Updated Nov 3, 2026Source checked Nov 3, 2026First seen by HOL Nov 3, 2026Material review Nov 3, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.5
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps anthropics/claude-code (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
anthropics/claude-codegeneric<1.8089.01.8089.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for anthropics/claude-code.
  2. 2Review the reported fix. Update anthropics/claude-code to 1.8089.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 3, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 3, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 3, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
Upstream source description

Claude Desktop is Anthropic's desktop application for interacting with Claude. Prior to 1.8089.0, Claude Desktop on Windows invokes git.exe through uv_spawn without an absolute path, allowing Windows search-path resolution to select a malicious git.exe placed in the opened project's current working directory before the intended system executable. Opening an attacker-controlled or shared repository can therefore execute the substituted program with the user's privileges. This issue is fixed in version 1.8089.0.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Claude Code: TOCTOU Race in Edit Tool Allows File Writes Outside the WorkspaceSame anthropics/claude-code package

Record context

Vulnerability class
RCE
EPSS
Not reported
CWE IDs
CWE-427
Source
CVE List V5
Source checked
Nov 3, 2026
References
1 linked source
Open source record