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CVE-2026-82397 Tornado: Urlencoded body parsing omits max_num_fields, so one request can stall the event loop

🗓️ 31 Aug 2026 21:28:13Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 50 Views

DoS in Tornado before 6.5.8 via unbounded urlencoded body parsing stalling the event loop.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cgr
Chainguard
CVE-2026-82397 vulnerabilities
3 Sep 202620:25
cgr
cve
CVE
CVE-2026-82397
31 Aug 202621:28
cve
debiancve
Debian CVE
CVE-2026-82397
31 Aug 202621:28
debiancve
euvd
EUVD
EUVD-2026-68892
2 Sep 202614:38
euvd
github
Github Security Blog
Tornado: Urlencoded body parsing omits max_num_fields, so one request can stall the event loop
2 Sep 202614:38
github
nvd
NVD
CVE-2026-82397
31 Aug 202622:17
nvd
osv
OSV
AZL-98544 CVE-2026-82397 affecting package python-tornado 6.3.3-11
31 Aug 202622:17
osv
osv
OSV
BELL-CVE-2026-82397
3 Sep 202606:05
osv
osv
OSV
CGA-8H5G-JRP9-J3CC
3 Sep 202613:51
osv
osv
OSV
CGA-9353-RMMV-MPPR
2 Sep 202620:16
osv
Rows per page
[
  {
    "vendor": "tornadoweb",
    "product": "tornado",
    "versions": [
      {
        "version": "< 6.5.8",
        "status": "affected"
      }
    ]
  }
]

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