CVE-2026-105755 (GCVE-0-2026-105755)
Vulnerability from cvelistv5
Published
2026-10-05 22:47
Modified
2026-10-06 17:55
Severity ?
4.2 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
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.
References
Impacted products
Vendor Product Version
vllm-project vllm Version: < 030.0
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