Is there a public exploit for CVE-2026-88066?

No public exploit for CVE-2026-88066 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-88066?

CVE-2026-88066 scores CVSS 7.5 (v4.0), rated high.

What does CVE-2026-88066 affect?

CVE-2026-88066 affects anthropics claude-code.

7.5 High

Claude Desktop is Anthropic's desktop application for interacting with Claude.

CVE-2026-88066

Claude Desktop is Anthropic's desktop application for interacting with Claude. Prior to 1.8089.0, Claude Desktop on Windows invokes git.exe through uvspawn 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.

Assessment

CVSS: 7.5 (v4.0)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 3 November 2026
Last updated: 3 November 2026
Affected: anthropics · claude-code
Assigner: GitHub_M

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

https://github.com/anthropics/claude-code/security/advisories/GHSA-4p2j-qj3c-6x84

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