Affected versions of this crate unconditionally implement Sync for SyncRef. This definition allows data races if &T is accessible through &SyncRef.
SyncRef derives Clone and Debug, and the default implementations of those traits access &T by invoking T::clone() & T::fmt(). It is possible to create data races & undefined behavior by concurrently invoking SyncRef::clone() or SyncRef::fmt() from multiple threads with T: !Sync.
// cvss v3.1 vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Checked 2026-09-27 at 21:36 UTC. The most recent advisory here was published 2021-08-25. Updated continuously from NVD, GHSA, OSV and CNA feeds.