CVE-2026-76098
Last modified
CVE-2026-76098 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.49% chance of exploitation in the next 30 days.
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
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| lepture | mistune | >= 3.3.0, < 3.3.3 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
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