OR
          *cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* versions up to (excluding) 0.24.0

CISA-ADP: https://github.com/vllm-project/vllm/security/advisories/GHSA-8wr5-jm2h-8r4f Types: Exploit, Vendor Advisory

GitHub, Inc.: https://github.com/vllm-project/vllm/commit/8a5cf1ccd65e8ac7635c402c1ec0b08988bc26ca Types: Patch

GitHub, Inc.: https://github.com/vllm-project/vllm/pull/44744 Types: Issue Tracking, Patch

GitHub, Inc.: https://github.com/vllm-project/vllm/security/advisories/GHSA-8wr5-jm2h-8r4f Types: Exploit, Vendor Advisory

https://github.com/vllm-project/vllm/security/advisories/GHSA-8wr5-jm2h-8r4f

{"timestamp":"2026-07-07T14:12:43.565166Z","id":"CVE-2026-54234","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. Prior to 0.24.0, a frontend-legal multi-request speculative decoding workload can cause the rejection sampler to produce a recovered token equal to the model vocabulary size boundary value, which is then converted to negative one when the engine selects the next live token for a request and is written back into the drafter's input ids; that out-of-vocabulary value is later consumed by the model's embedding and attention path and crashes the engine worker with a GPU device-side assertion. The same triggering request sequence is reachable through the public gRPC Generate and Abort endpoints, so a remote client that can send generation requests can crash the shared engine worker, aborting concurrent requests and causing a service-wide denial of service for other clients of the deployment until the worker is restarted. This issue is fixed in version 0.24.0.

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-20

CWE-1284

https://github.com/vllm-project/vllm/commit/8a5cf1ccd65e8ac7635c402c1ec0b08988bc26ca

https://github.com/vllm-project/vllm/pull/44744

https://github.com/vllm-project/vllm/security/advisories/GHSA-8wr5-jm2h-8r4f

[{"vendor":"vllm-project","product":"vllm","versions":[{"version":"< 0.24.0","status":"affected"}]}]