{"id":"CVE-2026-45804","state":"PUBLISHED","title":"Diffusers: TOCTOU Trust Remote Code Bypass","description":"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.","publishedAt":"2026-07-15T16:05:35.217Z","updatedAt":"2026-07-15T17:27:31.546Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["huggingface diffusers"],"affected":[{"vendor":"huggingface","product":"diffusers","versions":[{"version":"< 0.38.0","status":"affected"}]}],"references":["https://github.com/huggingface/diffusers/security/advisories/GHSA-7wx4-6vff-v64p","https://github.com/huggingface/diffusers/issues/13446","https://github.com/huggingface/diffusers/pull/13448","https://github.com/huggingface/diffusers/commit/a37f6f8394ac2a7ee8360c3abea811efe54512b1","https://github.com/huggingface/diffusers/releases/tag/v0.38.0"],"weaknesses":["CWE-367"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45804.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45804","state":"PUBLISHED","datePublished":"2026-07-15T16:05:35.217Z","dateUpdated":"2026-07-15T17:27:31.546Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-13T08:19:32.604Z"},"containers":{"cna":{"title":"Diffusers: TOCTOU Trust Remote Code Bypass","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"huggingface","product":"diffusers","versions":[{"version":"< 0.38.0","status":"affected"}]}],"references":[{"url":"https://github.com/huggingface/diffusers/security/advisories/GHSA-7wx4-6vff-v64p","name":"https://github.com/huggingface/diffusers/security/advisories/GHSA-7wx4-6vff-v64p","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/huggingface/diffusers/issues/13446","name":"https://github.com/huggingface/diffusers/issues/13446","tags":["x_refsource_MISC"]},{"url":"https://github.com/huggingface/diffusers/pull/13448","name":"https://github.com/huggingface/diffusers/pull/13448","tags":["x_refsource_MISC"]},{"url":"https://github.com/huggingface/diffusers/commit/a37f6f8394ac2a7ee8360c3abea811efe54512b1","name":"https://github.com/huggingface/diffusers/commit/a37f6f8394ac2a7ee8360c3abea811efe54512b1","tags":["x_refsource_MISC"]},{"url":"https://github.com/huggingface/diffusers/releases/tag/v0.38.0","name":"https://github.com/huggingface/diffusers/releases/tag/v0.38.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-367","lang":"en","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-15T16:05:35.217Z"},"source":{"advisory":"GHSA-7wx4-6vff-v64p","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/huggingface/diffusers/security/advisories/GHSA-7wx4-6vff-v64p","tags":["exploit"]},{"url":"https://github.com/huggingface/diffusers/issues/13446","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-15T17:27:27.543160Z","id":"CVE-2026-45804","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-15T17:27:31.546Z"}}]}}}