CVE-2026-85664
CVE-2026-85664
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.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-85664?
- CVE-2026-85664 is a high-severity vulnerability, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-09-04.
- How severe is CVE-2026-85664?
- High severity. CVSS v3 base score is 7.5 out of 10.