What’s Vulnerable › Vulnerabilities

CVE-2026-92782: Chroma through 1.5.9 Authorization Bypass via Collection Identifier

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-16 · updated 2026-09-24
• Weakness: CWE-863

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.

Affected products

• chroma-core chroma: through 1.5.9

References

• 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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