PT-2026-56508 · Lepture · Mistune

Publicado 2026-07-08 · Atualizado 2026-07-08 · CVE-2026-59922

Mitre

CVSS v3.1

7.5

Alta

Vetor base

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, a run of closed tilde, equals-sign, or caret marker pairs around a character causes quadratic work in src/mistune/plugins/formatting.py when the strikethrough, mark, or insert plugin scans for matching markers from each possible start position, allowing denial of service through CPU exhaustion. This issue is fixed in version 3.3.0.

Correção

DoS

Enumeração de Fraquezas

CWE-407

CWE-1333

Identificadores relacionados

CVE-2026-59922

Produtos afetados

Mistune

Referências · 4

• https://github.com/lepture/mistune/releases/tag/v3.3.0 · Nota
• https://github.com/lepture/mistune/commit/96d0f57f8fe9eeb06bb4cff521962a27d7c402e7 · Nota
• https://github.com/lepture/mistune/security/advisories/GHSA-c8j7-8cv4-2xmq · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-59922 · Nota de Segurança