vllm-project/vllm · Security
vLLM allows clients to crash the openai server with invalid regex
- GHSA ID
- GHSA-9hcf-v7m4-6m2j
- CVE ID
- CVE-2025-48943
- Severity
- medium
- Published
- Updated
- CVSS
- 6.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS v3
- 6.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
Impact
A denial of service bug caused the vLLM server to crash if an invalid regex was provided while using structured output. This vulnerability is similar to GHSA-6qc9-v4r8-22xg, but for regex instead of a JSON schema.
Issue with more details: https://github.com/vllm-project/vllm/issues/17313
Patches
CWEs
- CWE-248 · Uncaught Exception
References
- https://github.com/vllm-project/vllm/security/advisories/GHSA-9hcf-v7m4-6m2j ↗
- https://github.com/vllm-project/vllm/issues/17313 ↗
- https://github.com/vllm-project/vllm/pull/17623 ↗
- https://github.com/vllm-project/vllm/commit/08bf7840780980c7568c573c70a6a8db94fd45ff ↗
- https://nvd.nist.gov/vuln/detail/CVE-2025-48943 ↗
- https://github.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2025-55.yaml ↗
- https://github.com/advisories/GHSA-9hcf-v7m4-6m2j ↗