{"id":"CVE-2026-105755","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-105755","generatedAt":"2026-10-28T03:25:59.349Z","title":"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.","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.","published":"2026-10-05T23:17:02.000Z","lastModified":"2026-10-08T01:28:50.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":4.2,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L"},"cwe":["CWE-639"],"affected":["vllm/vllm"],"epss":{"score":0.00202,"percentile":0.10077,"date":"2026-10-26","history":[{"date":"2026-10-06","score":0.00204,"percentile":0.0943}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.20%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-05T23:17:02.000Z","detail":{"score":"4.2","severity":"MEDIUM","publishedAt":"2026-10-05T23:17:02.167Z"},"summary":"New CVE, medium severity (CVSS 4.2)."}],"references":[{"url":"https://github.com/vllm-project/vllm/commit/ee17d0d869203ef9a35ad73358a4987bba14b1fc","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/vllm-project/vllm/pull/51445","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/vllm-project/vllm/releases/tag/v0.30.0","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-2phq-3phc-84px","tags":["Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-105755","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}