CVE WatchOct 13, 2026

CVE-2026-86063

Claude Code is an agentic coding tool. Prior to 2.1.179, the Claude Code and Claude Desktop plugin installation flow runs git checkout for a

CVSS

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No CVSS

EPSS

0.2%

KEV

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Exploit Today

0-100

Published: Oct 13, 2026 · Last modified: Oct 13, 2026 · CWE-494 · CWE-829

EPSS · 30d

Not enough EPSS history yet.

Technical description

Claude Code is an agentic coding tool. Prior to 2.1.179, the Claude Code and Claude Desktop plugin installation flow runs git checkout for a marketplace-pinned commit without verifying that the resulting HEAD equals the pinned 40-character SHA. An attacker who controls a plugin repository on a Git host that permits SHA-shaped branch names can create a branch named after the reviewed commit, causing checkout to select the branch tip and install attacker-controlled plugin code. Exploitation requires a user to install the malicious plugin and pin it to the ostensibly safe hash. This issue is fixed in version 2.1.179.

Official references

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