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CVE-2026-73556

🗓️ 13 Aug 2026 14:56:52Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 118 Views🌐 WEB

vLLM pre-0.26.0 ReDoS via unauthenticated regex in lm-format-enforcer backend stalls CPU core.

Related
Detection
Affected
Refs
Paths
NVD
Vulners
Node
vllmvllmRange<0.26.0
[
  {
    "vendor": "vllm-project",
    "product": "vllm",
    "versions": [
      {
        "version": "< 0.26.0",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
structured_outputs.regexrequest body/v1/completionsThe structured_outputs.regex parameter in the /v1/completions endpoint is passed to the lm-format-enforcer backend without validation or timeout, allowing a ReDoS (Regular Expression Denial of Service) attack.CWE-1333, CWE-400

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28 Sep 2026 18:42Current
7.2High risk
Vulners AI Score7.2
CVSS 3.15.3
EPSS0.00515
SSVC
118