{"answers":{"affected":"2 open source packages ship an affected version, including @anthropic-ai/claude-code.","exploited":"There is no known exploitation of CVE-2026-86063 in the wild and no public exploit code.","fix":"Upgrade @anthropic-ai/claude-code to 2.1.179 or later.","what":"CVE-2026-86063 is a high-severity vulnerability in anthropics claude-code, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-86063 and fix it if it is affected.\n\nWhat it is: CVE-2026-86063 is a high-severity vulnerability in anthropics claude-code, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-86063 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @anthropic-ai/claude-code (npm): affected all versions; fixed in 2.1.179\n- @anthropic-ai/claude-code (npm): affected all versions; fixed in 2.1.179\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-86063/ (Markdown: https://insights.sbomify.com/CVE-2026-86063/index.md)","id":"CVE-2026-86063","markdown":"https://insights.sbomify.com/CVE-2026-86063/index.md","name":"CVE-2026-86063","record":{"aliases":["GHSA-pq7j-f95f-qfcv","MINI-r3r8-hmgf-fmm4"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"AI coding assistant","requires_auth":"none","summary":"Attackers can bypass hash pinning in Claude Code by creating branches named after commit SHAs, leading to installation of malicious plugin code.","user_interaction":"required","vuln_class":"supply_chain"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","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","version":"4.0"},"cwes":[{"id":"CWE-829","name":"Inclusion of Functionality from Untrusted Control Sphere"},{"id":"CWE-494","name":"Download of Code Without Integrity Check"}],"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.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Claude Code: Plugin Hash Pin Bypass Allows Bypass of Hash Pinning","id":"CVE-2026-86063","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"supply_chain","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"Klever-Go: /log controls global node logging","id":"CVE-2026-86064"},"packages":[{"ecosystem":"npm","fixed":["2.1.179"],"introduced":["0"],"last_affected":[],"package":"@anthropic-ai/claude-code","purl":null,"source":"GHSA-pq7j-f95f-qfcv"},{"ecosystem":"npm","fixed":["2.1.179"],"introduced":["0"],"last_affected":[],"package":"@anthropic-ai/claude-code","purl":"pkg:npm/%40anthropic-ai/claude-code","source":"GHSA-pq7j-f95f-qfcv"}],"prev":{"headline":"LightRAG: Stored Cross-Site Scripting (XSS) in the LightRAG WebUI chat/answer renderer via ingested content","id":"CVE-2026-86062"},"products":["claude-code"],"published":"2026-10-13","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-13","vendors":["anthropics"]},"summary":"Attackers can bypass hash pinning in Claude Code by creating branches named after commit SHAs, leading to installation of malicious plugin code.","url":"https://insights.sbomify.com/CVE-2026-86063/"}