{"answers":{"affected":"2 open source packages ship an affected version, including @libp2p/gossipsub.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-46679 exists.","fix":"Upgrade @libp2p/gossipsub to 15.0.23 or later.","what":"CVE-2026-46679 is a high-severity denial of service vulnerability in js-libp2p, published on 10 Jun 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-2026-46679 and fix it if it is affected.\n\nWhat it is: CVE-2026-46679 is a high-severity denial of service vulnerability in js-libp2p, published on 10 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-46679 exists.\n\nAffected packages and fixed versions:\n- @libp2p/gossipsub (npm): affected all versions; fixed in 15.0.23\n- @libp2p/gossipsub (npm): affected all versions; fixed in 15.0.23\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-2026-46679/ (Markdown: https://insights.sbomify.com/CVE-2026-46679/index.md)","id":"CVE-2026-46679","markdown":"https://insights.sbomify.com/CVE-2026-46679/index.md","name":"CVE-2026-46679","record":{"aliases":["GHSA-4f8r-922h-2vgv"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"libp2p JavaScript library","requires_auth":"none","summary":"An unauthenticated peer can exhaust the Node.js heap of a gossipsub node by flooding unique topics, causing a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-401","name":"Missing Release of Memory after Effective Lifetime"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"},{"id":"CWE-20","name":"Improper Input Validation"}],"description":"libp2p is a JavaScript Implementation of libp2p networking stack. Prior to version 15.0.23, three cooperating omissions in @libp2p/gossipsub allow an unauthenticated single peer to exhaust the Node.js heap of any gossipsub node with default options. This issue has been patched in version 15.0.23.","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":"libp2p: Memory DoS via subscription flood of unique topics","id":"CVE-2026-46679","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"containerd user ID handling bypass allows runAsNonRoot evasion","id":"CVE-2026-46680"},"packages":[{"ecosystem":"npm","fixed":["15.0.23"],"introduced":["0"],"last_affected":[],"package":"@libp2p/gossipsub","purl":null,"source":"GHSA-4f8r-922h-2vgv"},{"ecosystem":"npm","fixed":["15.0.23"],"introduced":["0"],"last_affected":[],"package":"@libp2p/gossipsub","purl":"pkg:npm/%40libp2p/gossipsub","source":"GHSA-4f8r-922h-2vgv"}],"prev":{"headline":"Pydantic AI: SSRF cloud-metadata blocklist bypass via IPv4-mapped IPv6 (Incomplete fix of CVE-2026-25580)","id":"CVE-2026-46678"},"products":["js-libp2p"],"published":"2026-06-10","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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-11","vendors":["libp2p"]},"summary":"An unauthenticated peer can exhaust the Node.js heap of a gossipsub node by flooding unique topics, causing a denial of service.","url":"https://insights.sbomify.com/CVE-2026-46679/"}