CVE-2026-115351

No fix known EPSS <1%CVSS 4.7

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.

Published 2026-10-22 · CVE record · OSV

Products: lepture mistune

Distro releases