Vulnerability details
CVE-2026-92782
chroma-core chroma
Chroma through 1.5.9 Authorization Bypass via Collection Identifier
CVSS 4.0
8.6High
Official 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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.6High | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | 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 |
| 8.1High | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| chroma-core | chroma | v ≤ 1.5.9 | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://github.com/chroma-core/chroma product
- https://github.com/chroma-core/chroma/blob/1.5.9/rust/frontend/src/server.rs#L469-L487 technical-description
- https://github.com/chroma-core/chroma/blob/1.5.9/rust/frontend/src/get_collection_with_segments_provider.rs#L143-L160 technical-description
- https://www.vulncheck.com/advisories/chroma-through-1.5.9-authorization-bypass-via-collection-identifier third-party-advisory
- https://github.com/chroma-core/chroma/issues/7462 issue-tracking
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Details
- Published
- 2026-09-17
- Last updated
- 2026-09-19
- State
- Published
- Assigner (CNA)
- VulnCheck
Exploit prediction (EPSS)
0.44%
Probability of exploitation in 30 days
39.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-863Incorrect Authorization