{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-86541 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-86541 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-86541 is a high-severity path traversal vulnerability in knowns-dev knowns, published on 7 Sep 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-2026-86541 and fix it if it is affected.\n\nWhat it is: CVE-2026-86541 is a high-severity path traversal vulnerability in knowns-dev knowns, published on 7 Sep 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-2026-86541 in the wild and no public exploit code.\n\nAffected product: knowns-dev knowns. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-86541/ (Markdown: https://insights.sbomify.com/CVE-2026-86541/index.md)","id":"CVE-2026-86541","markdown":"https://insights.sbomify.com/CVE-2026-86541/index.md","name":"CVE-2026-86541","record":{"aliases":["GHSA-f539-xgc6-xw7q","GHSA-g6q2-h5cf-8q26"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["data_modify","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"knowns developer tool","requires_auth":"none","summary":"Attackers can overwrite arbitrary files outside the project root via path traversal in the code.replace action, potentially leading to code execution.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":7.2,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"knowns versions before 0.30.0 contain a path traversal vulnerability in the handleCodeReplace() function that allows attackers to overwrite arbitrary files outside the project root. Attackers can supply absolute paths or relative paths containing directory traversal sequences to write malicious content to sensitive files like shell startup scripts or SSH configuration files.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"knowns before 0.30.0 Path Traversal via code.replace MCP action","id":"CVE-2026-86541","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"knowns before 0.30.0 Path Traversal via Import Name","id":"CVE-2026-86542"},"packages":[],"prev":{"headline":"knowns before 0.30.0 Arbitrary Code Execution via LSP Binary","id":"CVE-2026-86540"},"products":["knowns"],"published":"2026-09-07","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-24","vendors":["knowns-dev"]},"summary":"Attackers can overwrite arbitrary files outside the project root via path traversal in the code.replace action, potentially leading to code execution.","url":"https://insights.sbomify.com/CVE-2026-86541/"}