CVE-2026-27893: Vllm Remote Code Execution Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-7972-pg2x-xr59",
  "modified" : "2026-07-17T16:18:07Z",
  "published" : "2026-03-27T15:27:20Z",
  "aliases" : [ "CVE-2026-27893" ],
  "summary" : "vLLM has Hardcoded Trust Override in Model Files Enables RCE Despite Explicit User Opt-Out",
  "details" : "### Summary\n\n  Two model implementation files hardcode `trust_remote_code=True` when loading sub-components, bypassing the user's explicit `--trust-remote-code=False` security opt-out. This enables remote code execution via malicious model\n  repositories even when the user has explicitly disabled remote code trust.\n\n  ### Details\n\n  **Affected files (latest main branch):**\n\n  1. `vllm/model_executor/models/nemotron_vl.py:430`\n  ```python\n  vision_model = AutoModel.from_config(config.vision_config, trust_remote_code=True)\n```\n\n  2. vllm/model_executor/models/kimi_k25.py:177\n \n```python\n  cached_get_image_processor(self.ctx.model_config.model, trust_remote_code=True)\n```\n\n  Both pass a hardcoded trust_remote_code=True to HuggingFace API calls, overriding the user's global --trust-remote-code=False setting.\n\n  Relation to prior CVEs:\n  - CVE-2025-66448 fixed auto_map resolution in vllm/transformers_utils/config.py (config loading path)\n  - CVE-2026-22807 fixed broader auto_map at startup\n  - Both fixes are present in the current code. These hardcoded instances in model files survived both patches — different code paths.\n\n### Impact\n\n  Remote code execution. An attacker can craft a malicious model repository that executes arbitrary Python code when loaded by vLLM, even when the user has explicitly set --trust-remote-code=False. This undermines the security guarantee\n  that trust_remote_code=False is intended to provide.\n\n  Remediation: Replace hardcoded trust_remote_code=True with self.config.model_config.trust_remote_code in both files. Raise a clear error if the model component requires remote code but the user hasn't opted in.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "vllm"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.10.1"
      }, {
        "fixed" : "0.18.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/vllm-project/vllm/security/advisories/GHSA-7972-pg2x-xr59"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-27893"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vllm-project/vllm/pull/36192"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vllm-project/vllm/commit/00bd08edeee5dd4d4c13277c0114a464011acf72"
  }, {
    "type" : "WEB",
    "url" : "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27893.json"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/vllm-project/vllm"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2026-2297.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2452055"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2026-27893"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:8748"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:8747"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:8746"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:37275"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:24977"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:19725"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:19724"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:19712"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:10141"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:10140"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-693" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-27T15:27:20Z",
    "nvd_published_at" : "2026-03-27T00:16:22Z"
  }
}