CVE-2020-35905: Rust-Lang Future-Utils

Medium severity, CVSS 4.7. EPSS: 0.3% chance of exploitation in the next 30 days.

An issue was discovered in the futures-util crate before 0.3.7 for Rust. MutexGuard::map can cause a data race for certain closure situations (in safe code).

Affected products

• Rust-Lang Future-Utils: before 0.3.7 (fixed in 0.3.7)

Published 2020-12-31. Last modified 2026-06-17.