{"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","CWE-770"],"vendor":"vllm","product":"vllm","affected":["vllm < 0.30.0"],"patched":["vllm 0.30.0"],"published":"2026-10-05","updated":"2026-10-16","sourceUpdated":"2026-10-16T20:41:27.840","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"},{"url":"https://github.com/vllm-project/vllm/security/advisories/GHSA-5fj9-pfhr-6j48","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105759.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-105759"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2546208"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-105759"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105759"}],"tags":["nvd","cve.org","exploit-available","csaf","vex","red-hat","osv","pip"],"epss":0.00411,"epssPercentile":0.3519,"aliases":["PYSEC-2026-4325","GHSA-5fj9-pfhr-6j48"],"ecosystem":"pip","exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-06T17:56:34.732350Z"},"scores":{"nvd":5.9,"osv":7.5},"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## Affected\n\n- `vllm < 0.30.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `vllm 0.30.0`\n\n## Package advisory (CVE-2026-105759)\n\nAffected packages:\n\n- `vllm < 0.30.0`\n\nPatched in:\n\n- `vllm 0.30.0`\n\nSource: https://osv.dev/vulnerability/PYSEC-2026-4325\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat AI Inference Server, Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat OpenShift AI (RHOAI) · no fix planned: Red Hat AI Inference Server, Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat OpenShift AI (RHOAI) · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105759.json)","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":216621,"id":"CVE-2026-105759","ts":1791310370951,"field":"exploit_available","old":"false","new":"true"}]}