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CVE-2026-76098 Mistune has Denial of Service — RecursionError via Excessive Emphasis Markers in Markdown

🗓️ 24 Aug 2026 20:05:00Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 38 Views

Mistune 3.3.0-3.3.2 DoS via RecursionError from deeply nested emphasis tokens in HTML rendering.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
nessus
Tenable Nessus
Amazon Linux 2023 : python3-mistune (ALAS2023-2026-2148)
14 Sep 202600:00
–nessus
nessus
Tenable Nessus
Linux Distros Unpatched Vulnerability : CVE-2026-76098
25 Aug 202600:00
–nessus
amazon
Amazon
Important: python-mistune
14 Sep 202600:00
–amazon
cbl_mariner
CBLMariner
CVE-2026-76098 affecting package python-mistune for versions less than 3.3.4-1
2 Sep 202620:43
–cbl_mariner
circl
Circl
CVE-2026-76098
24 Aug 202622:02
–circl
cve
CVE
CVE-2026-76098
24 Aug 202620:05
–cve
debiancve
Debian CVE
CVE-2026-76098
24 Aug 202620:05
–debiancve
euvd
EUVD
EUVD-2026-65137
2 Sep 202615:14
–euvd
github
Github Security Blog
Mistune: Denial of Service — RecursionError via Excessive Emphasis Markers in Markdown
2 Sep 202615:14
–github
nvd
NVD
CVE-2026-76098
24 Aug 202620:17
–nvd
Rows per page
[
  {
    "vendor": "lepture",
    "product": "mistune",
    "versions": [
      {
        "version": ">= 3.3.0, < 3.3.3",
        "status": "affected"
      }
    ]
  }
]

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24 Aug 2026 20:05Current
CVSS 3.17.5
EPSS0.00488
SSVC
38