CVE-2020-35711: Arc-Swap Project Arc-Swap

High severity, CVSS 7.5. EPSS: 1.6% chance of exploitation in the next 30 days.

An issue has been discovered in the arc-swap crate before 0.4.8 (and 1.x before 1.1.0) for Rust. Use of arc_swap::access::Map with the Constant test helper (or with a user-supplied implementation of the Access trait) could sometimes lead to dangling references being returned by the map.

Affected products

• Arc-Swap Project Arc-Swap: before 0.4.8 (fixed in 0.4.8); from 1.0.0, before 1.1.0 (fixed in 1.1.0)

Published 2020-12-25. Last modified 2026-06-17.