Is CVE-2026-114052 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-114052 being exploited in the wild.

How severe is CVE-2026-114052?

High severity, with a CVSS score of 7.5, published 21 October 2026.

Which products and versions are affected?

vllm (PyPI) ECOSYSTEM:introduced=0.24.0,fixed=0.31.0; vLLM Project vllm after 0.24.0 and before 0.31.0.

Is there a fix for CVE-2026-114052?

Yes. vllm (PyPI): upgrade to 0.31.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-114052 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-114052?

Check whether you run vllm (PyPI) or vLLM Project vllm at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-114052: vLLM memory exhaustion in MOSS-Audio model serving

CVE-2026-114052 · Severity: high · CVSS 7.5 · Published 2026-10-21

vLLM is a library that serves large language and multimodal models. An attacker can exploit the MOSS-Audio model serving feature by sending specially crafted requests to the /tokenize endpoint, which bypasses API key authentication, to exhaust the server's memory and crash the API process. This creates a denial-of-service vulnerability that affects any deployment running MOSS-Audio models.

Technologies: vllm (PyPI), vLLM Project vllm. Vendors: PyPI, vLLM Project.

Quick answers

Is CVE-2026-114052 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-114052 being exploited in the wild.
How severe is CVE-2026-114052?: High severity, with a CVSS score of 7.5, published 21 October 2026.
Which products and versions are affected?: vllm (PyPI) ECOSYSTEM:introduced=0.24.0,fixed=0.31.0; vLLM Project vllm after 0.24.0 and before 0.31.0.
Is there a fix for CVE-2026-114052?: Yes. vllm (PyPI): upgrade to 0.31.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-114052 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-114052?: Check whether you run vllm (PyPI) or vLLM Project vllm at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

vllm (PyPI): upgrade to 0.31.0 or later
```
pip install "vllm>=0.31.0"
```

Technical details

The vulnerability is an unbounded resource allocation issue (CWE-770) in MOSS-Audio model serving where mm_processor_kwargs values from client requests are cached without limits in a private dictionary. Each distinct processor configuration instantiates a WhisperFeatureExtractor that allocates a mel-filter array; attackers can trigger persistent linear memory growth by submitting distinct configurations or amplify single-request allocations with oversized mel_config values. The /tokenize endpoint is intentionally unauthenticated and outside API-key-protected route prefixes, enabling unauthenticated remote exploitation.

Affected products

vLLM Project vLLM after 0.24.0 and before 0.31.0

Identifiers

CVE-2026-114052
GHSA-823j-m4cj-hmjf
PYSEC-2026-4361

Timeline

2026-10-06: disclosed

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.