Bug 2531492 (CVE-2026-85664) - CVE-2026-85664 chroma-core: github.com/chroma-core/chroma: Chroma: Denial of service via unbounded HNSW index parameters.
Summary: CVE-2026-85664 chroma-core: github.com/chroma-core/chroma: Chroma: Denial of ...
Keywords:
Status: NEW
Alias: CVE-2026-85664
Product: Security Response
Classification: Other
Component: vulnerability-draft
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-10 15:21 UTC by OSIDB Bzimport
Modified: 2026-09-11 14:36 UTC (History)
16 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-10 15:21:29 UTC 
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.
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