CVE-2024-32650: Rustls

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

Rustls is a modern TLS library written in Rust. `rustls::ConnectionCommon::complete_io` could fall into an infinite loop based on network input. When using a blocking rustls server, if a client send a `close_notify` message immediately after `client_hello`, the server's `complete_io` will get in an infinite loop. This vulnerability is fixed in 0.23.5, 0.22.4, and 0.21.11.

Affected products

• Rustls Rustls: from 0.23.0, before 0.23.5 (fixed in 0.23.5); from 0.22.0, before 0.22.4 (fixed in 0.22.4); from 0.21.0, before 0.21.11 (fixed in 0.21.11); version 0.20.0 only
• Rustls Project Rustls

Published 2024-04-19. Last modified 2026-06-17.