CVE-2025-59058

httpsig-rs is a Rust implementation of IETF RFC 9421 http message signatures. Prior to version 0.0.19, the HMAC signature comparison is not timing-safe. This makes anyone who uses HS256 signature verification vulnerable to a timing attack that allows the attacker to forge a signature. Version 0.0.19 fixes the issue.

• CWE-208

• https://github.com/junkurihara/httpsig-rs/commit/fc095b6ce6043bb808f5d9c4379cf697899cb458
• https://github.com/junkurihara/httpsig-rs/security/advisories/GHSA-q7pg-9pr4-mrp2

Published

Sep 12, 2025

Last Modified

Jun 17, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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