{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-11677 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-11677 is a medium-severity use after free vulnerability in warmcat libwebsockets, published on 20 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-11677 and fix it if it is affected.\n\nWhat it is: CVE-2025-11677 is a medium-severity use after free vulnerability in warmcat libwebsockets, published on 20 Oct 2025. 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-2025-11677 in the wild and no public exploit code.\n\nAffected product: warmcat libwebsockets. 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-2025-11677/ (Markdown: https://insights.sbomify.com/CVE-2025-11677/index.md)","id":"CVE-2025-11677","markdown":"https://insights.sbomify.com/CVE-2025-11677/index.md","name":"CVE-2025-11677","record":{"aliases":["BELL-CVE-2025-11677","DEBIAN-CVE-2025-11677","GHSA-fpc8-25p9-jfmr","UBUNTU-CVE-2025-11677"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"libwebsockets library","requires_auth":"none","summary":"A use-after-free flaw in libwebsockets can cause denial of service in specific configurations involving custom HTTP upgrade callbacks.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Nozomi","cpe":[],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"Use After Free in WebSocket server implementation in lws_handshake_server in warmcat libwebsockets may allow an attacker, in specific configurations where the user provides a callback function that handles LWS_CALLBACK_HTTP_CONFIRM_UPGRADE, to achieve denial of service.","ecosystems":[],"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":"Use After Free in libwebsockets WebSocket server","id":"CVE-2025-11677","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2025"},"n_packages":0,"n_references":2,"next":{"headline":"Stack-based Buffer Overflow in libwebsockets DNS response parsing","id":"CVE-2025-11678"},"packages":[],"prev":{"headline":"UPnP DOS in TL-WR940N V6","id":"CVE-2025-11676"},"products":["libwebsockets"],"published":"2025-10-20","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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-10-24","vendors":["warmcat"]},"summary":"A use-after-free flaw in libwebsockets can cause denial of service in specific configurations involving custom HTTP upgrade callbacks.","url":"https://insights.sbomify.com/CVE-2025-11677/"}