CVE-2026-105753mediumCWE-617

CVE-2026-105753: medium-severity vulnerability in vllm-project vllm

vLLM: Mirrored multimodal IPC caches desync after a rejected request — a later request reusing the same media hash trips a receiver assertion in the engine core

Published · Updated

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.5epss 0.4%
exploitation probability
0.4%top 65% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
vllm-project · vllm
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References
https://github.com/vllm-project/vllm/commit/396204230423b7cc6798300926b8fa30190d26a9https://github.com/vllm-project/vllm/pull/46747https://github.com/vllm-project/vllm/pull/51897https://github.com/vllm-project/vllm/releases/tag/v0.28.0https://github.com/vllm-project/vllm/security/advisories/GHSA-ph3r-5jfg-f84f