vLLM before 0.29.0 validates allowed_token_ids against tokenizer length instead of model output logits width in SamplingParams._validate_allowed_token_ids(). Attackers can supply token IDs above the output vocabulary that pass validation, causing LogitBiasState to corrupt GPU logits state and allow concurrent requests to sample tokens outside their allowlists.
Metrics
Affected Vendors & Products
References
History
Wed, 23 Sep 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-787 | |
| References |
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| Metrics |
threat_severity
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threat_severity
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Mon, 21 Sep 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Fri, 18 Sep 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | vLLM before 0.29.0 validates allowed_token_ids against tokenizer length instead of model output logits width in SamplingParams._validate_allowed_token_ids(). Attackers can supply token IDs above the output vocabulary that pass validation, causing LogitBiasState to corrupt GPU logits state and allow concurrent requests to sample tokens outside their allowlists. | |
| Title | vLLM before 0.29.0 Cross-Request Logits Corruption via allowed_token_ids | |
| First Time appeared |
Vllm
Vllm vllm |
|
| Weaknesses | CWE-129 | |
| CPEs | cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Vllm
Vllm vllm |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-09-18T19:06:06.001Z
Updated: 2026-09-24T14:23:15.056Z
Reserved: 2026-09-18T18:16:47.489Z
Link: CVE-2026-93840
Updated: 2026-09-21T18:29:57.171Z
Status : Analyzed
Published: 2026-09-18T20:17:34.200
Modified: 2026-09-28T18:36:00.710
Link: CVE-2026-93840