Uncontrolled Recursion Affecting mistune package, versions [,3.3.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published8 Jul 2026
- disclosed8 Jul 2026
- creditUnknown
Introduced: 8 Jul 2026
CVE-2026-59927 (opens in a new tab)How to fix?
Upgrade mistune to version 3.3.0 or higher.
Overview
Affected versions of this package are vulnerable to Uncontrolled Recursion through the include process. An attacker can cause the application to crash by creating two markdown files that recursively include each other, leading to unbounded recursion and a RecursionError.