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Vulnerability record · CVE-2026-92782 · published 16 September 2026

CVE-2026-92782: Incorrect authorization vulnerability

Chroma through 1.5.9 fails to validate tenant and database segments when resolving collections, allowing authenticated attackers to access collections from other tenants by knowing the collection identifier. Attackers can read, modify, and update records in foreign collections by issuing requests under their own tenant path, bypassing authorization checks.

8.6 CVSS 4.0 High EPSS 0.45% · top 63.6% CWE-863 · Incorrect authorization Awaiting Analysis
8.6CVSS 4.0 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
24 Sep 2026Last modified by NVD

Description

Chroma through 1.5.9 fails to validate tenant and database segments when resolving collections, allowing authenticated attackers to access collections from other tenants by knowing the collection identifier. Attackers can read, modify, and update records in foreign collections by issuing requests under their own tenant path, bypassing authorization checks.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/chroma-core/chroma
https://github.com/chroma-core/chroma/blob/1.5.9/rust/frontend/src/get_collection_with_segments_provider.rs#L143-L160
https://github.com/chroma-core/chroma/blob/1.5.9/rust/frontend/src/server.rs#L469-L487
https://github.com/chroma-core/chroma/issues/7462
https://www.vulncheck.com/advisories/chroma-through-1.5.9-authorization-bypass-via-collection-identifier
https://github.com/chroma-core/chroma/issues/7462

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Source: NIST National Vulnerability Database (record CVE-2026-92782), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.