{"id":"CVE-2026-22807","aliases":["GHSA-2pc9-4j83-qjmr","PYSEC-2026-2010"],"url":"https://o3.security/vulnerability/CVE-2026-22807","summary":"vLLM affected by RCE via auto_map dynamic module loading during model initialization","details":"# Summary\n\nvLLM loads Hugging Face `auto_map` dynamic modules during model resolution **without gating on `trust_remote_code`**, allowing attacker-controlled Python code in a model repo/path to execute at server startup.\n\n---\n\n# Impact\n\nAn attacker who can influence the model repo/path (local directory or remote Hugging Face repo) can achieve **arbitrary code execution** on the vLLM host during model load.  \nThis happens **before any request handling** and does **not require API access**.\n\n---\n\n# Affected Versions\n\nAll versions where `vllm/model_executor/models/registry.py` resolves `auto_map` entries with `try_get_class_from_dynamic_module` **without checking `trust_remote_code`** (at least current `main`).\n\n---\n\n# Details\n\nDuring model resolution, vLLM unconditionally iterates `auto_map` entries from the model config and calls `try_get_class_from_dynamic_module`, which delegates to Transformers’ `get_class_from_dynamic_module` and **executes the module code**.\n\nThis occurs even when `trust_remote_code` is `false`, allowing a malicious model repo to embed code in a referenced module and have it executed during initialization.\n\n### Relevant code\n\n- `vllm/model_executor/models/registry.py:856` — auto_map resolution  \n- `vllm/transformers_utils/dynamic_module.py:13` — delegates to `get_class_from_dynamic_module`, which executes code\n\n---\n\n# Fixes\n\n* https://github.com/vllm-project/vllm/pull/32194\n\n# Credits\n\nReported by **bugbunny.ai**","published":"2026-01-21T21:13:11.894Z","modified":"2026-08-12T03:51:12.387746345Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"epss":{"score":0.00741,"percentile":0.51851,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"vllm","fixedVersion":"0.14.0"}],"fix":{"url":"https://github.com/vllm-project/vllm/commit/78d13ea9de4b1ce5e4d8a5af9738fea71fb024e5","label":"vllm-project/vllm@78d13ea"},"references":[{"type":"WEB","url":"https://github.com/vllm-project/vllm/releases/tag/v0.14.0"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22807.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:10184"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:30087"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:30088"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:30089"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:3461"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:3462"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:3713"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:3782"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:42644"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:5119"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-22807"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22807.json"},{"type":"ADVISORY","url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-2pc9-4j83-qjmr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-22807"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2431865"},{"type":"FIX","url":"https://github.com/vllm-project/vllm/commit/78d13ea9de4b1ce5e4d8a5af9738fea71fb024e5"},{"type":"FIX","url":"https://github.com/vllm-project/vllm/pull/32194"},{"type":"WEB","url":"https://pypi.org/project/vllm"},{"type":"PACKAGE","url":"https://github.com/vllm-project/vllm"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2026-2010.yaml"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-2pc9-4j83-qjmr"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:12.387746345Z"}}