An issue was discovered in the xcb crate through 2021-02-04 for Rust. It has a soundness violation because transmutation to the wrong type can happen after xcb::base::cast_event uses std::mem::transmute to return a reference to an arbitrary type.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-26958.json"
[ { "events": [ { "introduced": "0" }, { "last_affected": "2021-02-04" } ] }, { "events": [ { "introduced": "0" }, { "last_affected": "2021-02-04" } ] } ]