# Cloudflare Found a Race Condition in a Widely Deployed Rust Library

DevFeed: [Cloudflare Found a Race Condition in a Widely Deployed Rust Library](<https://devfeed.tech/articles/the-bug-that-hid-from-every-tool-cloudflare-had-17928.md>)

Original publisher: [Read original article](<https://read.bytesizeddesign.com/p/cloudflare-bug-that-hid-from-every-tool>)

Author: Byte-Sized Design

Published: 2026-06-30T17:31:07Z

Content type: article

Language: en

Sources: [Byte-Sized Design](<https://devfeed.tech/sources/byte-sized-design.md>)

Topics: [race-condition](<https://devfeed.tech/topics/race-condition.md>), [Rust](<https://devfeed.tech/topics/rust.md>), [Cloudflare](<https://devfeed.tech/topics/cloudflare.md>)

Tags: [bug](<https://devfeed.tech/tags/bug.md>), [cloudflare](<https://devfeed.tech/tags/cloudflare.md>), [race-condition](<https://devfeed.tech/tags/race-condition.md>), [rust](<https://devfeed.tech/tags/rust.md>)

## AI overview

Cloudflare found a race condition in one of Rust's most-deployed libraries. The reported fix was four lines.

## Source excerpt

Cloudflare found a race condition buried in one of Rust's most-deployed libraries, and the fix was four lines