{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-124959 in the wild and no public exploit code.","exposure":"","fix":"No fix has been published for CVE-2026-124959 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-124959 is a high-severity vulnerability in Spotify Voyager, published on 9 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-124959 and fix it if it is affected.\n\nWhat it is: CVE-2026-124959 is a high-severity vulnerability in Spotify Voyager, published on 9 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-124959 in the wild and no public exploit code.\n\nAffected product: Spotify Voyager. 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-2026-124959/ (Markdown: https://insights.sbomify.com/CVE-2026-124959/index.md)","id":"CVE-2026-124959","markdown":"https://insights.sbomify.com/CVE-2026-124959/index.md","name":"CVE-2026-124959","record":{"aliases":["DEBIAN-CVE-2026-124959","GHSA-pvwj-4565-gq34","UBUNTU-CVE-2026-124959"],"analysis":null,"analysis_generated_by":null,"assigner":"certcc","cpe":[],"cvss":{"score":7.1,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"The loadIndex function in nmslib hnswlib and Spotify Voyager does not verify that the element count in a serialized HNSW index is within the stored capacity used to allocate the heap buffer. An attacker can supply a crafted index file with an element count greater than the stored capacity, causing the loader to write beyond the allocated buffer and potentially crash the application when it loads the file.","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":"Nmaslib Hnswlib and Spotify Voyager HNSW Index Deserialization Heap Out-of-Bounds Write","id":"CVE-2026-124959","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"mikefarah yq encoder_properties.go Encode escape output","id":"CVE-2026-124987"},"nickname":null,"packages":[],"prev":{"headline":"Use-after-free in the Audio/Video component","id":"CVE-2026-124952"},"products":["Voyager","hnswlib"],"published":"2026-11-09","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":"2026-11-12","vendors":["Spotify","hnswlib"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-124959/"}