{"cve":"CVE-2026-105755","nvd":{"published":"2026-10-05T23:17:02.167","modified":"2026-10-08T01:28:50.393","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L","score":4.2},"cwes":["CWE-639"],"references":["https://github.com/vllm-project/vllm/commit/ee17d0d869203ef9a35ad73358a4987bba14b1fc","https://github.com/vllm-project/vllm/pull/51445","https://github.com/vllm-project/vllm/releases/tag/v0.30.0","https://github.com/vllm-project/vllm/security/advisories/GHSA-2phq-3phc-84px"],"products":["vllm:vllm"],"source":"nvd","synced_at":"2026-10-19T22:57:46.668721662+00:00"},"epss":{"cve":"CVE-2026-105755","score":0.00202,"percentile":0.10075,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-2phq-3phc-84px","url":"https://osv.dev/vulnerability/GHSA-2phq-3phc-84px","summary":"vLLM: Flash late-interaction scoring caches query embeddings under a caller-controlled request id — cross-request integrity break and induced errors on `/score` and `/rerank`","modified":"2026-10-08T10:10:47.982371266Z","packages":[{"ecosystem":"PyPI","name":"vllm","purl":"pkg:pypi/vllm","ranges":["<0.30.0"],"fixed":["0.30.0"]}]},{"id":"PYSEC-2026-4198","url":"https://osv.dev/vulnerability/PYSEC-2026-4198","summary":"","modified":"2026-10-08T10:00:02.862032490Z","packages":[{"ecosystem":"PyPI","name":"vllm","purl":"pkg:pypi/vllm","ranges":["<0.30.0"],"fixed":["0.30.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}