{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-86543 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-86543 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-86543 is a critical missing authorization vulnerability in knowns-dev knowns, published on 7 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-86543 and fix it if it is affected.\n\nWhat it is: CVE-2026-86543 is a critical missing authorization vulnerability in knowns-dev knowns, published on 7 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-86543 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-2026-86543/ (Markdown: https://insights.sbomify.com/CVE-2026-86543/index.md)","id":"CVE-2026-86543","markdown":"https://insights.sbomify.com/CVE-2026-86543/index.md","name":"CVE-2026-86543","record":{"aliases":["GHSA-fc85-99vc-9c75","GHSA-pcf3-jgx6-7m94"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"knowns management API","requires_auth":"none","summary":"Attackers can access the unauthenticated management API to provision public tunnels, exposing internal services to the internet.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"knowns versions before 0.30.0 serve the management API without authentication on all network interfaces by default, with no password required on fresh installations. Attackers can access the unauthenticated /api/tunnel/start endpoint to provision a public tunnel and republish the API at a publicly accessible address.","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 Unauthenticated Management API Exposure","id":"CVE-2026-86543","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":7,"next":{"headline":"knowns before 0.30.0 Authorization Bypass via Misclassified Code Actions","id":"CVE-2026-86544"},"packages":[],"prev":{"headline":"knowns before 0.30.0 Path Traversal via Import Name","id":"CVE-2026-86542"},"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 access the unauthenticated management API to provision public tunnels, exposing internal services to the internet.","url":"https://insights.sbomify.com/CVE-2026-86543/"}