CVE-2026-45831

The SimpleRBACAuthorizationProvider authorization provider in versions 0.5.0 or later of the ChromaDB Python project evaluates whether a user holds a given permission but never checks which tenant, database, or collection that permission applies to allowing users to perform cross tenant actions.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.hiddenlayer.com/sai-security-advisory/2026-06-chromadb-3	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:trychroma:chromadb:*:*:*:*:*:python:*:*

History

16 Jun 2026, 15:07

Type	Values Removed	Values Added
CPE		cpe:2.3:a:trychroma:chromadb::::::python::*
References	~~() https://www.hiddenlayer.com/sai-security-advisory/2026-06-chromadb-3 -~~	() https://www.hiddenlayer.com/sai-security-advisory/2026-06-chromadb-3 - Third Party Advisory
First Time		Trychroma Trychroma chromadb
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 8.8

12 Jun 2026, 16:23

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-12 16:16

Updated : 2026-06-17 10:52

NVD link : CVE-2026-45831

Mitre link : CVE-2026-45831

CVE.ORG link : CVE-2026-45831

JSON object : View

Products Affected

trychroma

chromadb

CWE

CWE-863

Incorrect Authorization

{"id": "CVE-2026-45831", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-45831", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-06-12T16:21:25.323544Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "6f8de1f0-f67e-45a6-b68f-98777fdb759c", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.8, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/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:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "6f8de1f0-f67e-45a6-b68f-98777fdb759c", "affectedData": [{"repo": "https://github.com/chroma-core/chroma", "vendor": "Chroma", "product": "ChromaDB", "versions": [{"status": "affected", "version": "0.5.0", "versionType": "custom", "lessThanOrEqual": "*"}], "packageName": "chromadb", "defaultStatus": "unaffected"}]}], "published": "2026-06-12T16:16:28.797", "references": [{"url": "https://www.hiddenlayer.com/sai-security-advisory/2026-06-chromadb-3", "tags": ["Third Party Advisory"], "source": "6f8de1f0-f67e-45a6-b68f-98777fdb759c"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "6f8de1f0-f67e-45a6-b68f-98777fdb759c", "description": [{"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "The SimpleRBACAuthorizationProvider authorization provider in versions 0.5.0 or later of the ChromaDB Python project evaluates whether a user holds a given permission but never checks which tenant, database, or collection that permission applies to allowing users to perform cross tenant actions."}], "lastModified": "2026-06-17T10:52:34.240", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:trychroma:chromadb:*:*:*:*:*:python:*:*", "vulnerable": true, "matchCriteriaId": "3F20FEE1-F2B5-4C6F-8F46-924C1AB0EBAB", "versionEndIncluding": "1.5.9", "versionStartIncluding": "0.5.0"}], "operator": "OR"}]}], "sourceIdentifier": "6f8de1f0-f67e-45a6-b68f-98777fdb759c"}