Moderate severityNVD Advisory· Published May 30, 2025· Updated May 30, 2025
vLLM allows clients to crash the openai server with invalid regex
CVE-2025-48943
Description
vLLM is an inference and serving engine for large language models (LLMs). Version 0.8.0 up to but excluding 0.9.0 have a Denial of Service (ReDoS) that causes the vLLM server to crash if an invalid regex was provided while using structured output. This vulnerability is similar to GHSA-6qc9-v4r8-22xg/CVE-2025-48942, but for regex instead of a JSON schema. Version 0.9.0 fixes the issue.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
vllmPyPI | >= 0.8.0, < 0.9.0 | 0.9.0 |
Affected products
6- osv-coords5 versionspkg:apk/chainguard/py3.10-vllm-cuda-11.8pkg:apk/chainguard/py3.10-vllm-cuda-12.6pkg:apk/chainguard/py3.10-wheels-vllm-cuda-11.8pkg:apk/chainguard/tritonserver-backend-vllm-24.04pkg:pypi/vllm
< 0.9.0-r0+ 4 more
- (no CPE)range: < 0.9.0-r0
- (no CPE)range: < 0.9.0.1-r0
- (no CPE)range: < 0.9.0-r0
- (no CPE)range: < 24.04-r10
- (no CPE)range: >= 0.8.0, < 0.9.0
Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-9hcf-v7m4-6m2jghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-48943ghsaADVISORY
- github.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2025-55.yamlghsaWEB
- github.com/vllm-project/vllm/commit/08bf7840780980c7568c573c70a6a8db94fd45ffghsax_refsource_MISCWEB
- github.com/vllm-project/vllm/issues/17313ghsax_refsource_MISCWEB
- github.com/vllm-project/vllm/pull/17623ghsax_refsource_MISCWEB
- github.com/vllm-project/vllm/security/advisories/GHSA-9hcf-v7m4-6m2jghsax_refsource_CONFIRMWEB
News mentions
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