{
 "id": "CVE-2026-86063",
 "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.",
 "published": "2026-10-13",
 "last_modified": "2026-10-13",
 "vuln_status": "Awaiting Analysis",
 "cna": "security-advisories@github.com",
 "cvss": {
  "version": "4.0",
  "score": 7.5,
  "severity": "HIGH",
  "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",
  "source": "security-advisories@github.com"
 },
 "cwe": [
  "CWE-494",
  "CWE-829"
 ],
 "products": [
  {
   "vendor": "Anthropic",
   "product": "Claude Code",
   "versions_affected": null,
   "fixed_in": null,
   "product_id": null
  }
 ],
 "category": "product",
 "surface": [
  "supply_chain"
 ],
 "kev": null,
 "fix": {
  "status": "unknown",
  "version": null,
  "url": null
 },
 "references": [
  {
   "url": "https://github.com/anthropics/claude-code/releases/tag/v2.1.179",
   "source": "security-advisories@github.com",
   "tags": []
  },
  {
   "url": "https://github.com/anthropics/claude-code/security/advisories/GHSA-pq7j-f95f-qfcv",
   "source": "security-advisories@github.com",
   "tags": []
  }
 ],
 "related_agents": [
  "anthropic-claude-code"
 ],
 "related_incidents": [],
 "match": {
  "tests": [
   "A:name",
   "B:vocabulary"
  ],
  "terms": [
   "claude-code:Claude Code",
   "agentic"
  ]
 },
 "status": "candidate",
 "note": null,
 "reviewer": null,
 "checked_on": null,
 "retrieved_on": "2026-10-25"
}