{"id":"CVE-2026-45831","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.","modified":"2026-07-18T03:47:24.828237090Z","published":"2026-06-12T15:03:58.841Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45831.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0.5.0"},{"last_affected":"*"}]}],"cna_assigner":"HiddenLayer","cwe_ids":["CWE-863"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45831.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45831"},{"type":"ADVISORY","url":"https://www.hiddenlayer.com/sai-security-advisory/2026-06-chromadb-3"},{"type":"PACKAGE","url":"https://github.com/chroma-core/chroma"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/chroma-core/chroma","events":[{"introduced":"26b8ac67628e7b87ce53f067c0e95986378ccbaa"},{"last_affected":"a0a3c35217f2252870331dfd7b91590131fdad10"}],"database_specific":{"cpe":"cpe:2.3:a:trychroma:chromadb:*:*:*:*:*:python:*:*","extracted_events":[{"introduced":"0.5.0"},{"last_affected":"1.5.9"}],"source":"CPE_RANGE"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45831.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"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"}]}