## Claude Code: Plugin Hash Pin Bypass Allows Bypass of Hash Pinning

- 種別: advisory
- 重大度: high
- 関連技術: nodejs, anthropic
- CVE: CVE-2026-86063
- 公開日時: 2026-10-15T20:22:07.000Z
- 情報源: GitHub Advisory Database (https://github.com/advisories/GHSA-pq7j-f95f-qfcv)
- パーマリンク: https://vulnpulse.app/items/ghsa-ghsa-pq7j-f95f-qfcv

影響: npm:@anthropic-ai/claude-code < 2.1.179 → 2.1.179
The plugin install flow in Claude Code and Claude Desktop checked out a marketplace's pinned commit SHA using git checkout without verifying that the resulting HEAD matched the pinned SHA. An attacker controlling a plugin's upstream repository could create a branch named identically to the pinned 40-character SHA, causing the checkout to silently resolve to the attacker's branch tip instead of the reviewed commit, resulting in attacker-controlled code being installed bypassing the pinned hash.…