CVE-2021-29063: Fedoraproject Fedora

High severity, CVSS 7.5. EPSS: 4.2% chance of exploitation in the next 30 days.

A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in Mpmath v1.0.0 through v1.2.1 when the mpmathify function is called.

Affected products

• Fedoraproject Fedora: version 33 only; version 34 only; version 35 only
• Mpmath Mpmath: from 1.0.0, up to and including 1.2.1

Published 2021-06-21. Last modified 2026-06-17.