CVE-2026-86063 Claude Code - Command Injection

Claude Code prior to 2.1.179 contains a code injection caused by unchecked git checkout of marketplace-pinned commits allowing attacker-controlled plugin code installation, letting attackers execute arbitrary code, exploit requires user to install and pin malicious plugin.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.17% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Command Injection
Impact
Remote Code Execution
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/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
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-494

Vendor fix

Update to version 2.1.179 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs