{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-85664 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-85664 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-85664 is a high-severity denial of service vulnerability in chroma-core chroma, published on 4 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-2026-85664 and fix it if it is affected.\n\nWhat it is: CVE-2026-85664 is a high-severity denial of service vulnerability in chroma-core chroma, published on 4 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-2026-85664 in the wild and no public exploit code.\n\nAffected product: chroma-core chroma. 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-2026-85664/ (Markdown: https://insights.sbomify.com/CVE-2026-85664/index.md)","id":"CVE-2026-85664","markdown":"https://insights.sbomify.com/CVE-2026-85664/index.md","name":"CVE-2026-85664","record":{"aliases":["GHSA-3q9g-fh5w-hp67"],"analysis":{"component_type":"database","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Vector database","requires_auth":"none","summary":"Unauthenticated attackers can cause denial of service in Chroma vector database by supplying unbounded HNSW index parameters that exhaust server memory.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"Chroma 1.5.9 fails to validate maximum bounds on HNSW index parameters max_neighbors, ef_construction, and ef_search in collection-create requests. Unauthenticated attackers can supply arbitrarily large parameter values to exhaust server memory and cause denial of service during index compaction.","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":"Chroma 1.5.9 Unbounded HNSW Index Parameters Memory Exhaustion","id":"CVE-2026-85664","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"Bruno through 4.1.0 Arbitrary File Read via Unconfined Body File Path","id":"CVE-2026-85665"},"packages":[],"prev":{"headline":"Aim 3.29.1 Remote Code Execution via Unauthenticated Method Dispatch","id":"CVE-2026-85663"},"products":["chroma"],"published":"2026-09-04","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":"partial"},"state":"PUBLISHED","updated":"2026-09-10","vendors":["chroma-core"]},"summary":"Unauthenticated attackers can cause denial of service in Chroma vector database by supplying unbounded HNSW index parameters that exhaust server memory.","url":"https://insights.sbomify.com/CVE-2026-85664/"}