vLLM through 0.29.0 fails to properly validate bad_words token indices against the model's generation output width in SamplingParams.update_from_tokenizer(). Attackers can supply out-of-bounds token indices that corrupt logits memory of concurrent requests, causing different in-flight HTTP requests to return incorrect tokens.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Sat, 19 Sep 2026 23:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | vLLM through 0.29.0 fails to properly validate bad_words token indices against the model's generation output width in SamplingParams.update_from_tokenizer(). Attackers can supply out-of-bounds token indices that corrupt logits memory of concurrent requests, causing different in-flight HTTP requests to return incorrect tokens. | |
| Title | vLLM through 0.29.0 Cross-Request Logits Corruption via bad_words | |
| First Time appeared |
Vllm
Vllm vllm |
|
| Weaknesses | CWE-129 | |
| CPEs | cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Vllm
Vllm vllm |
|
| References |
|
|
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-09-19T22:58:10.572Z
Reserved: 2026-09-19T10:55:49.093Z
Link: CVE-2026-93989
No data.
Status : Received
Published: 2026-09-19T23:17:10.043
Modified: 2026-09-19T23:17:10.043
Link: CVE-2026-93989
No data.
OpenCVE Enrichment
Updated: 2026-09-20T00:30:16Z
Weaknesses