{"id":"CVE-2026-105759","title":"vLLM is an inference and serving engine for large language models","summary":"vLLM is an inference and serving engine for large language models. Prior to 0.30.0, the Rust frontend's track_http_metrics middleware records the raw HTTP method token as a Prometheus label for requests reaching registered routes. An una…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-400"],"vendor":"vllm-project","product":"vllm","affected":["vllm < 0.30.0"],"published":"2026-10-05","updated":"2026-10-05","sourceUpdated":"2026-10-05T23:17:02.760","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-105759","references":[{"url":"https://github.com/vllm-project/vllm/commit/3735c2d5f5248259482b9045c34fb7a8a3892352","label":"security-advisories@github.com"},{"url":"https://github.com/vllm-project/vllm/pull/56058","label":"security-advisories@github.com"},{"url":"https://github.com/vllm-project/vllm/releases/tag/v0.30.0","label":"security-advisories@github.com"},{"url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-5fj9-pfhr-6j48","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-05T23:36:21.158Z","slug":"CVE-2026-105759","body":"## Overview\n\nvLLM is an inference and serving engine for large language models. Prior to 0.30.0, the Rust frontend's track_http_metrics middleware records the raw HTTP method token as a Prometheus label for requests reaching registered routes. An unauthenticated attacker can send unique arbitrary method tokens to unguarded routes such as /tokenize, causing Prometheus's Family::get_or_create function to permanently create counter and histogram label sets. Those label sets increase process memory usage and enlarge the /metrics response until the service or monitoring path is exhausted. This issue is fixed in version 0.30.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":32,"depthScoreParts":{"impact":32.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}