{"id":"CVE-2026-45829","aliases":["PYSEC-2026-311"],"url":"https://o3.security/vulnerability/CVE-2026-45829","summary":"ChromaDB Python project has a pre-authentication code injection vulnerability","details":"A pre-authentication, code injection vulnerability in version 1.0.0 or later of the ChromaDB Python project allows an unauthenticated attacker to run arbitrary code on the server by sending a malicious model repository and trust_remote_code set to true in the /api/v2/tenants/{tenant}/databases/{db}/collections endpoint.","published":"2026-05-18T18:31:30Z","modified":"2026-10-05T21:45:03.620198036Z","cvss":{"score":10,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"},"epss":{"score":0.12387,"percentile":0.95852,"asOf":"2026-08-15"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"chromadb","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45829"},{"type":"WEB","url":"https://github.com/chroma-core/chroma/issues/6717"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-45829"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479623"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-f4j7-r4q5-qw2c"},{"type":"PACKAGE","url":"https://github.com/chroma-core/chroma"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/chromadb/PYSEC-2026-311.yaml"},{"type":"WEB","url":"https://pypi.org/project/chromadb"},{"type":"WEB","url":"https://www.hiddenlayer.com/research/chromatoast-served-pre-auth"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-05T21:45:03.620198036Z"}}