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CVE-2026-91991

🗓️ 15 Sep 2026 15:18:32Reported by VulnCheckType 
cve
 cve
🔗 web.nvd.nist.gov👁 4 Views

Tornado before 6.5.8 contains an incomplete fix for cookie attribute injection that allows attackers to inject arbitrary cookie attributes by passing capitalized or legacy keyword arguments to set_cookie. Attackers can embed semicolon-delimited da...

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
cvelist
Cvelist
CVE-2026-91991 Tornado before 6.5.8 Cookie Attribute Injection via Capitalized kwargs
15 Sep 202615:18
cvelist
euvd
EUVD
EUVD-2026-78663
15 Sep 202615:18
euvd
nvd
NVD
CVE-2026-91991
15 Sep 202616:17
nvd
Vulners
CNA
Node
tornadowebtornadoRange6.5.56.5.8
[
  {
    "vendor": "tornadoweb",
    "product": "tornado",
    "defaultStatus": "unaffected",
    "versions": [
      {
        "versionType": "semver",
        "version": "6.5.5",
        "lessThan": "6.5.8",
        "status": "affected"
      },
      {
        "versionType": "semver",
        "version": "6.5.8",
        "status": "unaffected"
      }
    ]
  }
]

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15 Sep 2026 16:17Current
CVSS 3.15.4
CVSS 46.3
4