All vulnerabilities

Servers and applications

CVE-2025-48942

vLLM is an inference and serving engine for large language models (LLMs). In versions 0.8.0 up to but excluding 0.9.0, hitting the /v1/completions API with a invalid json_schema as a Guided Param kills the vllm server. This vulnerability is similar GHSA-9hcf-v7m4-6m2j/CVE-2025-48943, but for regex instead of a JSON schema. Version 0.9.0 fixes the issue.

Severity
Medium 6.5
Published
30 May 2025
Last changed
17 Jun 2026
Added to UpHeron
3 Nov 2026
Fixed in
0.9.0
Sources
NVD

Affected software

SoftwareAffected versions
vLLMServers and applications · cpe:a:vllm:vllm
  • From 0.8.0 before 0.9.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-48942
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-48942