MEDIUMCVSS v3.1 5.9Vulnerability
CVE-2026-126398
vLLM from 0.28.0 before 0.30.0 contains a reachable assertion vulnerability in GPUModelRunner._init_xdrope_positions that allows remote attackers to crash the engine by submitting embeddings-only requests. Attackers can send a /v1/completions request containing only prompt_embeds to XD-RoPE models with --enable-prompt-embeds, terminating the EngineCore and API server for all clients.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-11-14T00:40:25.638091+00:00
- Epss score
- 0.00492
- Cvss severity
- MEDIUM
- Cvss score
- 5.9
- Retrieved at
- 2026-11-14T00:51:03+00:00
- Last source
- FIRST EPSS
- Score
- 5.9
- Cvss version
- 3.1
- Cve id
- CVE-2026-126398
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- First seen by Signal
- 2026-11-13T17:31:47+00:00
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published at
- 2026-11-13T10:17:44.093
- Last modified
- 2026-11-13T10:17:44.217
- Epss percentile
- 0.42799
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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