{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86411 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-86411 is a critical vulnerability in curl, published on 20 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-86411 and fix it if it is affected.\n\nWhat it is: CVE-2026-86411 is a critical vulnerability in curl, published on 20 Oct 2026. \nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86411 exists.\n\nAffected product: curl. 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-2026-86411/ (Markdown: https://insights.sbomify.com/CVE-2026-86411/index.md)","id":"CVE-2026-86411","markdown":"https://insights.sbomify.com/CVE-2026-86411/index.md","name":"CVE-2026-86411","record":{"aliases":["ALPINE-CVE-2026-86411","BELL-CVE-2026-86411","CURL-CVE-2026-86411","DEBIAN-CVE-2026-86411","GHSA-533v-mrfx-494r","MINI-486q-v4m4-cpqc","MINI-m772-8mvf-243g"],"analysis":null,"analysis_generated_by":null,"assigner":"curl","cpe":[],"cvss":{"score":9.1,"severity":"critical","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-488","name":"Exposure of Data Element to Wrong Session"}],"description":"An `ftp://` transfer configured with `CURLUSESSL_NONE` can reuse a pooled FTP\ncontrol connection that a previous easy handle upgraded with `STARTTLS` and\nauthenticated using a client certificate. The second handle performs neither a\nnew TLS handshake nor a new FTP login, so the server continues to authorize it\nunder the first handle's certificate identity.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"FTP connection reuse inherits client-certificate","id":"CVE-2026-86411","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"server-set cookie erases cookie jar","id":"CVE-2026-86412"},"packages":[],"prev":{"headline":"redirect to SFTP or SCP bypasses host verification","id":"CVE-2026-86410"},"products":["curl"],"published":"2026-10-20","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":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-29","vendors":["curl"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-86411/"}