GCD AI RADAR
incidents/AIR-2026-0616

CVE-2026-44222: vLLM vulnerable to remote DoS via special-token placeholders

Attack on AI2 Disclosed vulnerabilityInfrastructure vulnerability

Unauthenticated prompts spelling special tokens caused vLLM to index into empty grids during input-position computation. This triggered an unhandled IndexError terminating the worker and causing availability degradation.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

Details

type
Attack on AI
An AI model, agent or AI-powered product was the thing exploited, abused or leaked.
categories
  • Infrastructure vulnerability
    CVEs and advisories in AI frameworks, inference servers, MCP servers, AI developer tools and hosting stacks.
owasp llm top 10
mitre atlas
no technique for these categories
Both rows are derived from the type and categories (OWASP 2025 edition, ATLAS release 2026.09), not classified per record. How
severity
2 · Disclosed vulnerability
CVE or vendor advisory, patched or patchable, no confirmed exploitation.
targets
Framework / tooling
products
vLLM
incident date
5 May 2026
first reported
5 May 2026
origin
GitHub Advisory Database
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
classifier confidence
0.95 · published at or above 0.80; see the methodology
tags
CVE-2026-44222 · vllm · dos
record
created 2026-10-18 07:00Z · updated 2026-10-18 10:04Z · json

Sources · 2

  1. 2026-05-05
    CVE-2026-44222: vLLM Vulnerable to Remote DoS via Special-Token Placeholders
    GitHub Advisory Database · github.com/advisories/GHSA-hpv8-x276-m59f
  2. 2026-05-12
    CVE-2026-44222: vLLM is an inference and serving engine for large language models (LLMs).
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-44222

Titles and links belong to their publishers. The summary above is written by GCD AI RADAR in its own words; data is CC BY-SA 4.0.

Related incidents