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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/vllm-project/vllm/commit/08bf7840780980c7568c573c70a6a8db94fd45ff	Patch
https://github.com/vllm-project/vllm/issues/17248	Issue Tracking
https://github.com/vllm-project/vllm/pull/17623	Issue Tracking Patch
https://github.com/vllm-project/vllm/security/advisories/GHSA-6qc9-v4r8-22xg	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*

History

24 Jun 2025, 17:44

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-05-30 19:15

Updated : 2025-06-24 17:44

NVD link : CVE-2025-48942

Mitre link : CVE-2025-48942

CVE.ORG link : CVE-2025-48942

JSON object : View

Products Affected

vllm

vllm

CWE

CWE-248

Uncaught Exception

{"id": "CVE-2025-48942", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "published": "2025-05-30T19:15:30.130", "references": [{"url": "https://github.com/vllm-project/vllm/commit/08bf7840780980c7568c573c70a6a8db94fd45ff", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/vllm-project/vllm/issues/17248", "tags": ["Issue Tracking"], "source": "security-advisories@github.com"}, {"url": "https://github.com/vllm-project/vllm/pull/17623", "tags": ["Issue Tracking", "Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/vllm-project/vllm/security/advisories/GHSA-6qc9-v4r8-22xg", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-248"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "vLLM es un motor de inferencia y servicio para modelos de lenguaje grandes (LLM). En las versiones 0.8.0 y 0.9.0, excepto esta, al acceder a la API /v1/completions con un json_schema no v\u00e1lido como par\u00e1metro guiado, se desactiva el servidor vllm. Esta vulnerabilidad es similar a la vulnerabilidad GHSA-9hcf-v7m4-6m2j/CVE-2025-48943, pero para expresiones regulares en lugar de un esquema JSON. La versi\u00f3n 0.9.0 corrige el problema."}], "lastModified": "2025-06-24T17:44:47.737", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8E26EB9F-426B-4A73-B8CA-2D9F3727AF2C", "versionEndExcluding": "0.9.0", "versionStartIncluding": "0.8.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}