Mistune has Denial of Service — RecursionError via Excessive Emphasis Markers in Markdown (lepture mistune)
En bref
- Source
- NVD
- EPSS
- EPSS 0.49 % · centile 42 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- GitHub_M
- Statut NVD
- Deferred
Rechercher sur…
Description
Mistune is a Python Markdown parser with renderers and plugins. Versions 3.3.0 through 3.3.2 are vulnerable to DoS through deeply nested tokens. HTML rendering creates deeply nested emphasis tokens from consecutive asterisk characters, and recursive rendering in HTMLRenderer.render_token() can exceed Python's recursion limit and raise RecursionError, allowing crafted Markdown to crash a parsing process. This issue is fixed in version 3.3.3
Faiblesses (CWE)
- CWE-674 — Récursion non maîtrisée
Références
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | GitHub_M |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · security-advisories@github.com (Secondary) |
Avis
- GHSA-6m44-fpc8-c3rq — Mistune: Denial of Service — RecursionError via Excessive Emphasis Markers in Markdown
- PYSEC-2026-3863 — Mistune: Denial of Service — RecursionError via Excessive Emphasis Markers in Markdown
Références européennes
- ENISA EUVD · EUVD-2026-65137
- GCVE · GCVE-0-2026-76098
Produits affectés
| Produit | Versions |
|---|---|
| lepture · mistune | affected >= 3.3.0, < 3.3.3 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |