PT-2026-56000 · Vllm · Vllm

Brodmart · Publicado 2026-07-06 · Atualizado 2026-07-06 · CVE-2026-55574

NVD

CVSS v4.0

8.7

Alta

Vetor base

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. Prior to 0.24.0, the structured outputs.regex API parameter passes a user-supplied regular expression string directly to the grammar compiler backends with no compilation timeout; in the xgrammar backend the string reaches the regex compiler with no guard, and in the outlines backend the validation step blocks structural issues such as lookarounds and backreferences but performs no complexity analysis, so a pattern with nested quantifiers passes all checks and causes exponential state-space expansion, allowing a single request containing an adversarial regex to hang an inference worker indefinitely and deny service. This issue is fixed in version 0.24.0.

Correção

DoS

Enumeração de Fraquezas

CWE-1333

Identificadores relacionados

CVE-2026-55574

Produtos afetados

Vllm

Referências · 4

• https://github.com/vllm-project/vllm/commit/2b3006076c5e9bc4cda9e03e3641388de3c5c286 · Nota
• https://github.com/vllm-project/vllm/security/advisories/GHSA-rwxx-mrjm-wc2m · Nota
• https://github.com/vllm-project/vllm/pull/45118 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-55574 · Nota de Segurança