CVE-2021-32920: Debian Linux

High severity, CVSS 7.5. EPSS: 2.3% chance of exploitation in the next 30 days.

Prosody before 0.11.9 allows Uncontrolled CPU Consumption via a flood of SSL/TLS renegotiation requests.

Affected products

• Debian Debian Linux: version 10.0 only
• Fedoraproject Fedora: version 32 only; version 33 only; version 34 only
• Prosody Prosody: before 0.11.9 (fixed in 0.11.9)

Published 2021-05-13. Last modified 2026-06-17.