{"id":"CVE-2026-45804","summary":"Diffusers: TOCTOU Trust Remote Code Bypass","details":"Diffusers is the a library for pretrained diffusion models. Prior to 0.38.0, Diffusers' DiffusionPipeline.from_pretrained flow can bypass the trust_remote_code guard because download() validates model_index.json and custom pipeline code before later loading from a cached folder that can change, allowing a Hub repository with custom .py pipeline code to execute through the custom pipeline flow without passing custom_pipeline or trust_remote_code=True. This issue is fixed in version 0.38.0.","aliases":["GHSA-7wx4-6vff-v64p","PYSEC-2026-2446"],"modified":"2026-07-17T03:46:46.207883760Z","published":"2026-07-15T16:05:35.217Z","related":["CGA-8887-5872-hxpf"],"database_specific":{"cwe_ids":["CWE-367"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45804.json","cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/huggingface/diffusers/releases/tag/v0.38.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45804.json"},{"type":"ADVISORY","url":"https://github.com/huggingface/diffusers/security/advisories/GHSA-7wx4-6vff-v64p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45804"},{"type":"REPORT","url":"https://github.com/huggingface/diffusers/issues/13446"},{"type":"FIX","url":"https://github.com/huggingface/diffusers/commit/a37f6f8394ac2a7ee8360c3abea811efe54512b1"},{"type":"FIX","url":"https://github.com/huggingface/diffusers/pull/13448"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/huggingface/diffusers","events":[{"introduced":"0"},{"fixed":"a37f6f8394ac2a7ee8360c3abea811efe54512b1"},{"fixed":"275869dcae4ebcfee6a80253fdabc56033335020"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.38.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v0.16.0","v0.15.0","v0.14.0","v0.13.0","v0.12.0","v0.11.0","v0.10.0","v0.9.0","v0.8.0","v0.7.0","v0.6.0","v0.5.0","v0.4.1","v0.4.0","v0.3.0","v0.2.4","v0.2.3","v0.2.2","v0.2.1","v0.2.0","0.1.3","0.1.2","0.1.1","0.1.0","v0.0.4","v0.0.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45804.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}