CVE-2018-20996: Crossbeam Project Crossbeam

Critical severity, CVSS 9.8. EPSS: 1.7% chance of exploitation in the next 30 days.

An issue was discovered in the crossbeam crate before 0.4.1 for Rust. There is a double free because of destructor mishandling.

Affected products

• Crossbeam Project Crossbeam: before 0.4.1 (fixed in 0.4.1)

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