CVE-2026-45831

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{"bugzilla": {"description": "ChromaDB: ChromaDB: Unauthorized cross-tenant actions due to improper authorization checks", "id": "2488417", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2488417"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-1220", "details": ["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.", "A flaw was found in the SimpleRBACAuthorizationProvider authorization provider in the ChromaDB Python project. This vulnerability allows an authenticated user to perform actions across different tenants, databases, or collections without proper authorization. The provider incorrectly evaluates user permissions without verifying the specific scope (tenant, database, or collection) to which those permissions apply. This can lead to unauthorized data access or modification across different user environments."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, restrict network access to the ChromaDB instance to only trusted clients and services. Implement firewall rules to limit inbound connections to the ChromaDB port from authorized sources. If strict multi-tenant isolation is critical, consider deploying ChromaDB in a single-tenant configuration or exploring alternative authorization mechanisms if available, until a fix for the `SimpleRBACAuthorizationProvider` is deployed."}, "name": "CVE-2026-45831", "package_state": [{"cpe": "cpe:/a:redhat:enterprise_linux_ai:3", "fix_state": "Affected", "package_name": "rhelai3/bootc-cuda-rhel9", "product_name": "Red Hat Enterprise Linux AI (RHEL AI) 3"}, {"cpe": "cpe:/a:redhat:enterprise_linux_ai:3", "fix_state": "Affected", "package_name": "rhelai3/bootc-gaudi-rhel9", "product_name": "Red Hat Enterprise Linux AI (RHEL AI) 3"}, {"cpe": "cpe:/a:redhat:enterprise_linux_ai:3", "fix_state": "Affected", "package_name": "rhelai3/bootc-rocm-rhel9", "product_name": "Red Hat Enterprise Linux AI (RHEL AI) 3"}, {"cpe": "cpe:/a:redhat:enterprise_linux_ai:3", "fix_state": "Affected", "package_name": "rhelai3/disk-image-cuda-rhel9", "product_name": "Red Hat Enterprise Linux AI (RHEL AI) 3"}, {"cpe": "cpe:/a:redhat:openshift_ai", "fix_state": "Affected", "package_name": "rhoai/odh-autorag-rhel9", "product_name": "Red Hat OpenShift AI (RHOAI)"}], "public_date": "2026-06-12T15:03:58Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-45831\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-45831\nhttps://www.hiddenlayer.com/sai-security-advisory/2026-06-chromadb-3"], "statement": "is a post-authentication authorization flaw in ChromaDB\u2019s SimpleRBAC provider \u2014 it does not grant unauthenticated access and does not enable code execution. RH AI products bundle a vulnerable chromadb version but do not run the Chroma Python server with SimpleRBAC as the default product architecture (AutoRAG uses Milvus/pgvector; RHEL AI bootc uses chromadb as a library). Upstream 8.8 High assumes a multi-tenant Chroma deployment with SimpleRBAC enabled and network reachability; that configuration is not the supported RH default, so Moderate is appropriate for RHOAI and Low for RHEL AI bootc.", "threat_severity": "Moderate"}

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