CVE-2026-105753

vLLM is an inference and serving engine for large language models. Prior to 0.28.0, the default mirrored multimodal LRU cache can commit a media hash in the frontend sender cache during multimodal rendering and before engine admission, while the engine receiver cache never receives the payload if that request is rejected. A later request reusing the same media hash causes MultiModalProcessorSenderCache to send no payload and MultiModalReceiverCache to reach an assertion with the message "Expected a cached item," producing a shared-service availability failure. This issue is fixed in version 0.28.0.

• CWE-617

• https://github.com/vllm-project/vllm/commit/396204230423b7cc6798300926b8fa30190d26a9
• https://github.com/vllm-project/vllm/pull/46747
• https://github.com/vllm-project/vllm/pull/51897
• https://github.com/vllm-project/vllm/releases/tag/v0.28.0
• https://github.com/vllm-project/vllm/security/advisories/GHSA-ph3r-5jfg-f84f

Published

Oct 5, 2026

Last Modified

Oct 6, 2026

Status

Awaiting Analysis

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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