CVSS 4.0
7.5 highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NCVE-2026-88066
High (7.5). EPSS 0.3% estimated probability of exploitation activity in the next 30 days.
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.
Severity
- EPSS
- 0.3% estimated probability of exploitation activity in the next 30 days; 17th percentile. Scored 2026-11-04. A forecast for this CVE across the internet, not for your own systems.
- CWE
- CWE-427 Uncontrolled Search Path Element
- OWASP Top 10
- A08:2025 Software or Data Integrity Failures
- Published
- Modified
- Record from
- the NVD, synced
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Explain CVE-2026-88066 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-88066?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-88066?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-88066 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| anthropics claude-code | < 1.8089.0 |
Attack patterns (CAPEC)
- CAPEC-38 Leveraging/Manipulating Configuration File Search Paths Likelihood: High · Severity: Very High
- CAPEC-471 Search Order Hijacking Severity: Medium
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.