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CVE-2026-105755: vLLM is an inference and serving engine for large language models. Prior to 0.30.0, flash late-inter…

Occurred
Oct 5, 2026
Published
Oct 5, 2026
Source
NVD CVE

Summary

vLLM is an inference and serving engine for large language models. Prior to 0.30.0, flash late-interaction scoring at the /score and /rerank endpoints derives each worker's query_key value from the caller-controlled X-Request-Id header. A concurrent request that reuses a victim's identifier can overwrite the cached query embedding so the victim's documents are scored against the attacker's query, and shared use counters can also cause a late-interaction cache-miss error. This issue is fixed in version 0.30.0.

Tags

  • CVE
  • CVE-2026-105755
  • cvss:MEDIUM

Classification

Category confidence: 90%
Severity confidence: 85%

Rationale: CVE describes a security vulnerability allowing request ID reuse to overwrite cached embeddings, potentially exposing sensitive data or causing unauthorized access.

Classifier: Qwen/Qwen3.5-35B-A3B-FP8

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