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CVE-2026-100649

3.7 · LOW

vLLM before 0.29.0 contains a resource-limit bypass vulnerability in PyNvVideoCodec decoder allocation where sampler subclass shadowing allows independent counter increments.

Published Sep 26, 2026vllmCWE-770EPSS 0.34%

Overview

CVE-2026-100649 is a low-severity vulnerability affecting vllm vllm. It was published on September 26, 2026 and has a CVSS 3.1 base score of 3.7 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

vLLM before 0.29.0 contains a resource-limit bypass vulnerability in PyNvVideoCodec decoder allocation where sampler subclass shadowing allows independent counter increments. Unauthenticated attackers can select different sampler subclasses in video requests to exceed configured decoder limits and exhaust unaccounted GPU memory.

Remediation

Check the references section for vendor advisories and patches from vllm. Update vllm to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
vllmvllm>= 0, < 0.29.0Affected

References

GitHubgithub.com/vllm-project/vllm/security/advisories/GHSA-j682-9xp5-rrf3Refwww.vulncheck.com/advisories/vllm-before-0.29.0-resource-limit-bypass-via-sampler-subclass

How CyberStrike helps

Frequently asked questions

What is CVE-2026-100649?

CVE-2026-100649 is a low-severity vulnerability affecting vllm vllm. It was published on September 26, 2026 and has a CVSS 3.1 base score of 3.7 (LOW).

How severe is CVE-2026-100649?

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-100649?

Check the references section for vendor advisories and patches from vllm. Update vllm to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-100649?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-100649 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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