CVE-2016-10931: Rust-OpenSSL Project Rust-OpenSSL

High severity, CVSS 8.1. EPSS: 0.7% chance of exploitation in the next 30 days.

An issue was discovered in the openssl crate before 0.9.0 for Rust. There is an SSL/TLS man-in-the-middle vulnerability because certificate verification is off by default and there is no API for hostname verification.

Affected products

• Rust-OpenSSL Project Rust-OpenSSL: before 0.9.0 (fixed in 0.9.0)

Published 2019-08-26. Last modified 2026-06-17.