SEPTEMBER 17, 2026
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Case File

CVE-2026-85664

HIGH · CVSS 7.5 EPSS 0.37% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-04 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

Chroma 1.5.9 is vulnerable due to improper validation of maximum bounds on HNSW index parameters, allowing unauthenticated attackers to submit excessively large values in collection-create requests. This can lead to memory exhaustion and result in a denial of service during index compaction. Organizations using Chroma should prioritize patching this vulnerability to prevent potential service disruptions.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-85664
Severity
HIGH
CVSS
7.5
EPSS
0.37%

Original NVD 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.