{"answers":{"affected":"2 open source packages ship an affected version, including @bitbonsai/mcpvault.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-57442 exists.","fix":"Upgrade @bitbonsai/mcpvault to 0.11.5 or later.","what":"CVE-2026-57442 is a medium-severity path traversal vulnerability in bitbonsai mcpvault, published on 15 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-57442 and fix it if it is affected.\n\nWhat it is: CVE-2026-57442 is a medium-severity path traversal vulnerability in bitbonsai mcpvault, published on 15 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-57442 exists.\n\nAffected packages and fixed versions:\n- @bitbonsai/mcpvault (npm): affected all versions; fixed in 0.11.5\n- @bitbonsai/mcpvault (npm): affected all versions; fixed in 0.11.5\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-2026-57442/ (Markdown: https://insights.sbomify.com/CVE-2026-57442/index.md)","id":"CVE-2026-57442","markdown":"https://insights.sbomify.com/CVE-2026-57442/index.md","name":"CVE-2026-57442","record":{"aliases":["GHSA-9c83-rr99-vfwj"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"MCP Vault server","requires_auth":"none","summary":"An attacker can bypass path restrictions to read sensitive nested files like .git or .obsidian metadata in MCPVault.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-538","name":"Insertion of Sensitive Information into Externally-Accessible File or Directory"},{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"MCPVault is a lightweight Model Context Protocol server for safe access to files in an Obsidian vault. Prior to 0.11.5, PathFilter in src/pathfilter.ts uses root-anchored deny-list patterns, so nested .git, .obsidian, and node_modules path segments do not match the restriction and pass both isAllowed() and isAllowedForListing(). An attacker who influences a path selected by an AI agent can traverse nested repository or Obsidian metadata, read remote URLs or embedded tokens, or cause nested node_modules content to pollute the listAllTags index. This issue is fixed in version 0.11.5.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"MCPVault: PathFilter restricted directories (.git/.obsidian/node_modules) only denied at vault root, not nested","id":"CVE-2026-57442","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":2,"n_references":4,"next":{"headline":"SCBE-AETHERMOORE Unauthenticated AetherBrowser Ops API Exposes Operator Email Digests","id":"CVE-2026-57443"},"packages":[{"ecosystem":"npm","fixed":["0.11.5"],"introduced":["0"],"last_affected":[],"package":"@bitbonsai/mcpvault","purl":null,"source":"GHSA-9c83-rr99-vfwj"},{"ecosystem":"npm","fixed":["0.11.5"],"introduced":["0"],"last_affected":[],"package":"@bitbonsai/mcpvault","purl":"pkg:npm/%40bitbonsai/mcpvault","source":"GHSA-9c83-rr99-vfwj"}],"prev":{"headline":"MCPVault: PathFilter restricted-directory deny-list bypass via case and trailing dot/space equivalence","id":"CVE-2026-57441"},"products":["mcpvault"],"published":"2026-09-15","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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-16","vendors":["bitbonsai"]},"summary":"An attacker can bypass path restrictions to read sensitive nested files like .git or .obsidian metadata in MCPVault.","url":"https://insights.sbomify.com/CVE-2026-57442/"}