CVE-2025-71379 — Security Box Score

CVE · referencelatest edition

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

CVE-2025-71379MEDIUM

vllm - Regular Expression Denial of Service in Multiple Components

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   L   N   N   N   L    5.3   .0032   25.0     —

AFFECTED
  Product  Versions  Fixed
  vllm     0.6.3 –   0.9.0

TIMELINE
  Jun 20  EXPLOIT PUBLISHED — CVE-2025-71379 (vllm). Public exploit reference added.
  Jun 20  Reserved by VulnCheck
  Jun 20  Published (CNA: VulnCheck)

CWE-1333 · CNA: VulnCheck · CVSS v4.0 · 2 references · NVD status: Analyzed

Description

vLLM versions >= 0.6.3 and < 0.9.0 contain multiple regular expression denial of service (ReDoS) vulnerabilities. Several regex patterns — in vllm/lora/utils.py, the phi4mini tool parser, and the OpenAI-compatible serving chat endpoint — are susceptible to catastrophic backtracking. An attacker submitting crafted input with nested or repeated structures can trigger severe CPU consumption and performance degradation, resulting in denial of service.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 20, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2025-71379 (vllm). Public exploit reference added.
June 20, 2026	Reserved	Reserved by VulnCheck
June 20, 2026	Published	Published (CNA: VulnCheck)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
vllm	vllm	—	0.6.3	0.9.0

Weaknesses

CWE-1333

References (2)

https://github.com/vllm-project/vllm/security/advisories/GHSA-j828-28rj-hfhp [Exploit, Vendor Advisory]
https://www.vulncheck.com/advisories/vllm-regular-expression-denial-of-service-in-multiple-components [Third Party Advisory]

Authoritative record: CVE-2025-71379 at cve.org

Vendors: vllm

Weaknesses: CWE-1333

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2025-71379 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 Wednesday, August 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.