medium4.7
CVE-2026-115351
Mistune from 3.2.1 before 3.3.0 contains a CSS injection vulnerability that allows attackers controlling markdown input to inject arbitrary style declarations …
Impact
Mistune from 3.2.1 before 3.3.0 contains a CSS injection vulnerability that allows attackers controlling markdown input to inject arbitrary style declarations via the unvalidated figwidth option of the figure directive. Attackers can append declarations like background:url() to the rendered figure style attribute, forcing victim browsers to send requests to attacker servers and leak attribute values.
Affected products
| Product | Affected versions |
|---|---|
| Mistune From 3.2.1 | before 3.3.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.