{"answers":{"affected":"2 open source packages ship an affected version, including @anthropic-ai/claude-code. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-55607 in the wild and no public exploit code.","fix":"Upgrade @anthropic-ai/claude-code to 2.1.163 or later.","what":"CVE-2026-55607 is a high-severity path traversal vulnerability in anthropics claude-code, published on 29 Jun 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-2026-55607 and fix it if it is affected.\n\nWhat it is: CVE-2026-55607 is a high-severity path traversal vulnerability in anthropics claude-code, published on 29 Jun 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-2026-55607 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @anthropic-ai/claude-code (npm): affected from 2.1.38; fixed in 2.1.163\n- @anthropic-ai/claude-code (npm): affected from 2.1.38; fixed in 2.1.163\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-2026-55607/ (Markdown: https://insights.sbomify.com/CVE-2026-55607/index.md)","id":"CVE-2026-55607","markdown":"https://insights.sbomify.com/CVE-2026-55607/index.md","name":"CVE-2026-55607","record":{"aliases":["GHSA-7835-87q9-rgvv","MINI-67r7-78qr-hmcq","MINI-8cv7-4r7h-wrc4"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["code_execution","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Claude Code CLI","requires_auth":"none","summary":"Attackers can escape the sandbox and execute arbitrary code by exploiting git worktree path confusion and symlink manipulation in Claude Code.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"claude_code","vendor":"anthropic"}],"cvss":{"score":7.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command"},{"id":"CWE-59","name":"Improper Link Resolution Before File Access"},{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"Claude Code is an agentic coding tool.  From 2.1.38 until 2.1.163, Claude Code's worktree handling allowed creation of worktrees named \".git\" and navigation to worktrees outside the sandbox context, enabling git directory confusion attacks. By exploiting symlink manipulation and git fsmonitor execution during worktree operations, an attacker could overwrite files in the user's home directory (such as .zshenv), leading to code execution outside of seatbelt sandbox restrictions. Reliably exploiting this required the user to clone a malicious repository containing prompt injection content and run Claude Code against it. This vulnerability is fixed in 2.1.163.","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: Sandbox Escape via Git Worktree Path Confusion Allows Unsandboxed Code Execution","id":"CVE-2026-55607","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"n8n-MCP: Incorrect authorization can expose default-scope workflow version backups in multi-tenant HTTP mode","id":"CVE-2026-55608"},"packages":[{"ecosystem":"npm","fixed":["2.1.163"],"introduced":["2.1.38"],"last_affected":[],"package":"@anthropic-ai/claude-code","purl":null,"source":"GHSA-7835-87q9-rgvv"},{"ecosystem":"npm","fixed":["2.1.163"],"introduced":["2.1.38"],"last_affected":[],"package":"@anthropic-ai/claude-code","purl":"pkg:npm/%40anthropic-ai/claude-code","source":"GHSA-7835-87q9-rgvv"}],"prev":{"headline":"odhcpd: Stack buffer overread via DUID length endianness mismatch in memcmp()","id":"CVE-2026-55606"},"products":["claude-code"],"published":"2026-06-29","related":[{"cvss_score":8.7,"headline":"Claude Code Command Validation Bypass Allows Arbitrary Code Execution","id":"CVE-2025-66032","kev_date_added":null,"published":"2025-12-03"},{"cvss_score":8.7,"headline":"@anthropic-ai/claude-code has Sed Command Validation Bypass that Allows Arbitrary File Writes","id":"CVE-2025-64755","kev_date_added":null,"published":"2025-11-21"},{"cvss_score":8.7,"headline":"Claude Code's startup trust dialog could lead to Command Execution attack","id":"CVE-2025-59536","kev_date_added":null,"published":"2025-10-03"},{"cvss_score":8.7,"headline":"Claude Code rg command had Command Injection that allowed bypass of user approval prompt for command execution","id":"CVE-2025-58764","kev_date_added":null,"published":"2025-09-10"},{"cvss_score":8.7,"headline":"Claude Code vulnerable to arbitrary code execution caused by maliciously configured git email","id":"CVE-2025-59041","kev_date_added":null,"published":"2025-09-10"},{"cvss_score":8.7,"headline":"Claude Code echo command allowed bypass of user approval prompt for command execution","id":"CVE-2025-54795","kev_date_added":null,"published":"2025-08-05"}],"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":"US public information, NVD API terms","name":"NVD"},{"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":"2026-06-29","vendors":["anthropics"]},"summary":"Attackers can escape the sandbox and execute arbitrary code by exploiting git worktree path confusion and symlink manipulation in Claude Code.","url":"https://insights.sbomify.com/CVE-2026-55607/"}