{"id":"CVE-2026-45804","title":"diffusers: Diffusers: Arbitrary code execution due to trust_remote_code guard bypass (CVE-2026-45804)","summary":"A flaw was found in Diffusers, a library for pretrained diffusion models. A remote attacker could exploit this vulnerability by crafting a malicious Hub repository with custom Python pipeline code. The `DiffusionPipeline.from_pretrained` f…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","cvssSource":"vendor","cwe":"CWE-94","vendor":"Red Hat","product":"Red Hat AI Inference Server 3.4","affected":["ai_inference_server","ai_inference_server 3.4","enterprise_linux_ai 3.4","openshift_ai 3.4"],"patched":["ai_inference_server 3.4","enterprise_linux_ai 3.4","openshift_ai 3.4"],"published":"2026-07-15","updated":"2026-10-06","sourceUpdated":"2026-10-06T02:06:24+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45804.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45804.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-45804"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2501024"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45804"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45804"},{"url":"https://github.com/huggingface/diffusers/commit/a37f6f8394ac2a7ee8360c3abea811efe54512b1"},{"url":"https://github.com/huggingface/diffusers/issues/13446"},{"url":"https://github.com/huggingface/diffusers/pull/13448"},{"url":"https://github.com/huggingface/diffusers/releases/tag/v0.38.0"},{"url":"https://github.com/huggingface/diffusers/security/advisories/GHSA-7wx4-6vff-v64p"},{"url":"https://access.redhat.com/errata/RHSA-2026:69466"},{"url":"https://access.redhat.com/errata/RHSA-2026:70965"},{"url":"https://access.redhat.com/errata/RHSA-2026:70979"},{"url":"https://access.redhat.com/errata/RHSA-2026:69467"},{"url":"https://access.redhat.com/errata/RHSA-2026:76150"},{"url":"https://access.redhat.com/errata/RHSA-2026:76149"},{"url":"https://access.redhat.com/errata/RHSA-2026:60520"},{"url":"https://github.com/huggingface/diffusers"},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/diffusers/PYSEC-2026-2446.yaml"}],"tags":["csaf","vex","red-hat","osv","pip"],"epss":0.0037,"epssPercentile":0.30718,"aliases":["GHSA-7wx4-6vff-v64p","PYSEC-2026-2446"],"ecosystem":"pip","ingestedAt":"2026-07-13T18:57:54.749Z","slug":"CVE-2026-45804","body":"## Overview\n\nA flaw was found in Diffusers, a library for pretrained diffusion models. A remote attacker could exploit this vulnerability by crafting a malicious Hub repository with custom Python pipeline code. The `DiffusionPipeline.from_pretrained` flow can bypass the `trust_remote_code` security mechanism, allowing the execution of arbitrary code on the system when a user interacts with the malicious repository. This could lead to high impact on confidentiality, integrity, and availability of the affected system.\n\n## Vendor advisories\n\n- **RHSA-2026:69466** · Red Hat · fixed in: Red Hat AI Inference Server 3.4 · released 2026-09-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:69466)\n- **RHSA-2026:70965** · Red Hat · fixed in: Red Hat AI Inference Server 3.4 · released 2026-09-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:70965)\n- **RHSA-2026:70979** · Red Hat · fixed in: Red Hat AI Inference Server 3.4 · released 2026-09-23 · [advisory](https://access.redhat.com/errata/RHSA-2026:70979)\n- **RHSA-2026:69467** · Red Hat · fixed in: Red Hat AI Inference Server 3.4 · released 2026-09-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:69467)\n- **RHSA-2026:76150** · Red Hat · fixed in: Red Hat Enterprise Linux AI 3.4 · released 2026-10-05 · [advisory](https://access.redhat.com/errata/RHSA-2026:76150)\n- **RHSA-2026:76149** · Red Hat · fixed in: Red Hat Enterprise Linux AI 3.4 · released 2026-10-05 · [advisory](https://access.redhat.com/errata/RHSA-2026:76149)\n- **RHSA-2026:60520** · Red Hat · fixed in: Red Hat OpenShift AI 3.4 · released 2026-08-27 · [advisory](https://access.redhat.com/errata/RHSA-2026:60520)\n- **Red Hat VEX** · Important · affected: Red Hat AI Inference Server · no fix planned: Red Hat AI Inference Server · updated 2026-10-06 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45804.json)\n\n**diffusers: Diffusers: Arbitrary code execution due to trust_remote_code guard bypass** — rated Important by Red Hat. Released 2026-07-15, updated 2026-10-06.\n\nAffected:\n\n- Red Hat AI Inference Server\n\nFixed:\n\n- Red Hat AI Inference Server 3.4\n- Red Hat Enterprise Linux AI 3.4\n- Red Hat OpenShift AI 3.4\n\nNo fix planned:\n\n- Red Hat AI Inference Server\n\nNot affected:\n\n- Red Hat Enterprise Linux AI 3.4\n- Red Hat OpenShift AI 3.4\n- Red Hat AI Inference Server\n- Red Hat OpenShift AI (RHOAI)\n\n## Remediation\n\nFor more information visit https://access.redhat.com/errata/RHSA-2026:69466 https://access.redhat.com/errata/RHSA-2026:69466\nFor more information visit https://access.redhat.com/errata/RHSA-2026:70965 https://access.redhat.com/errata/RHSA-2026:70965\nFor more information visit https://access.redhat.com/errata/RHSA-2026:70979 https://access.redhat.com/errata/RHSA-2026:70979\n\n## Package advisory (CVE-2026-45804)\n\nAffected packages:\n\n- `diffusers < 0.38.0`\n\nPatched in:\n\n- `diffusers 0.38.0`\n\nSource: https://osv.dev/vulnerability/GHSA-7wx4-6vff-v64p","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}