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CVE-2026-114052— vLLM 0.25.0 before 0.31.0 MOSS-Audio Memory Exhaustion via /tokenize mm_processor_kwargs

Quick assessment

Affected
vllm-project vllm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

vLLM 在 0.24.0 之后、0.31.0 之前的版本中，MOSS-Audio 模型服务存在内存耗尽漏洞。该服务会将每个由请求控制的 值对应的处理器缓存到一个无界字典中。未认证的攻击者可以向 端点发送不同的或过大的 值，从而绕过 防护，耗尽主机内存并导致 API 进程崩溃。

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-114052

Vulnerability Information
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Vulnerability Title
vLLM 0.25.0 before 0.31.0 MOSS-Audio Memory Exhaustion via /tokenize mm_processor_kwargs
Source: CVE Program / CVE List V5
Vulnerability Description
vLLM after 0.24.0 and before 0.31.0 contains a memory exhaustion vulnerability in MOSS-Audio model serving that caches a processor for every distinct request-controlled mm_processor_kwargs value in an unbounded dictionary. Unauthenticated attackers can send distinct or oversized mel_config values to the /tokenize endpoint, which bypasses --api-key, to exhaust host memory and crash the API process.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
vllm-project vllm 0.25.0 ~ 0.31.0 -

II. Public POCs for CVE-2026-114052

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III. Intelligence Information for CVE-2026-114052

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Other References for CVE-2026-114052 (2)

Same Patch Batch · vllm-project · 2026-10-21 · 7 CVEs total

CVE-2026-114053 8.1 HIGH vLLM 0.7.3 before 0.31.0 RCE via mm_processor_kwargs.code_revision
CVE-2026-114050 7.5 HIGH vLLM before 0.31.0 Remote Engine Crash via Forged Multimodal UUID
CVE-2026-114055 7.5 HIGH vLLM 0.7.3 before 0.31.0 DoS via Unvalidated mm_processor_kwargs
CVE-2026-114051 7.5 HIGH vLLM before 0.31.0 Denial of Service via min_tokens in /inference/v1/generate
CVE-2026-114054 6.5 MEDIUM vLLM before 0.31.0 Cross-Request Cache Aliasing via EXIF ImageID and Prefix-Cache Keys
CVE-2026-114049 3.7 LOW vLLM before 0.31.0 Stale allowed_token_ids Mask via InputBatch.condense

IV. Related Vulnerabilities

Same product: vllm
Same vendor: vllm-project
Same weakness: CWE-770

V. Comments for CVE-2026-114052

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