Reference page — cumulative record through Thursday, October 8, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV N L N L N N N H 7.1 .0033 24.2 —
AFFECTED Product Versions Fixed vllm unspecified 0.29.0
TIMELINE Sep 26 Reserved by VulnCheck Sep 26 Published (CNA: VulnCheck) Oct 6 EXPLOIT PUBLISHED — CVE-2026-100651 (vllm-project vllm). Public exploit reference added.
vLLM before 0.29.0 fails to enforce decoder prompt-length validation on the disaggregated serving endpoint /inference/v1/generate. When the request contains a 'features' (multimodal) payload, vllm/entrypoints/serve/disagg/serving.py builds a multimodal EngineInput directly from the caller-supplied token_ids, and GenerateRequest.token_ids (vllm/entrypoints/serve/disagg/protocol.py) is not checked against model_config.max_model_len. For multimodal processors that report skip_prompt_length_check=True (for example Nemotron Parse, Whisper, and FireRedLID), InputProcessor._validate_prompt_len() returns immediately for both encoder and decoder prompts, so an overlong prompt becomes an EngineCoreRequest and reaches the worker input-batch copy into a fixed max_model_len-wide NumPy row. A client able to reach the endpoint on an affected model configuration can therefore submit an overlong token_ids list to trigger a worker failure and denial of service. Fixed in 0.29.0.
| Date | Event | Detail |
|---|---|---|
| September 26, 2026 | Reserved | Reserved by VulnCheck |
| September 26, 2026 | Published | Published (CNA: VulnCheck) |
| October 6, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-100651 (vllm-project vllm). Public exploit reference added. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| vllm-project | vllm | — | — | 0.29.0 |
Authoritative record: CVE-2026-100651 at cve.org
Vendors: vllm-project
Weaknesses: CWE-400
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-100651 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Thursday, October 8, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
