Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-105759

CVE-2026-105759HIGH

vllm-project vllm — vLLM: Unbounded Prometheus label cardinality from attacker-controlled HTTP method tokens in the vLLM Rust frontend metrics middleware (unauthenticated denial of service)

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  N  H    7.5   .0036   28.7     —

AFFECTED
  Product  Versions    Fixed
  vllm     < 0.30.0 –  —

TIMELINE
  Oct 5   Reserved by GitHub_M
  Oct 5   Published (CNA: GitHub_M)
  Oct 16  EXPLOIT PUBLISHED — CVE-2026-105759 (vllm-project vllm). Public exploit reference added.
  Oct 16  RESCORED — CVE-2026-105759 (vllm-project vllm). CVSS 5.9 → 7.5 (NVD).

CWE-400 · CNA: GitHub_M · CVSS v3.1 · 4 references · NVD status: Analyzed

Description

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 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.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
October 5, 2026	Reserved	Reserved by GitHub_M
October 5, 2026	Published	Published (CNA: GitHub_M)
October 16, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-105759 (vllm-project vllm). Public exploit reference added.
October 16, 2026	RESCORED	RESCORED — CVE-2026-105759 (vllm-project vllm). CVSS 5.9 → 7.5 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
vllm-project	vllm	—	< 0.30.0	—

Weaknesses

CWE-400

References (4)

https://github.com/vllm-project/vllm/commit/3735c2d5f5248259482b9045c34fb7a8a3892352 [Patch]
https://github.com/vllm-project/vllm/pull/56058 [Issue Tracking, Patch]
https://github.com/vllm-project/vllm/releases/tag/v0.30.0 [Release Notes]
https://github.com/vllm-project/vllm/security/advisories/GHSA-5fj9-pfhr-6j48 [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-105759 at cve.org

Vendors: vllm-project

Weaknesses: CWE-400

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-105759 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.