VULNERABILITY INTELLIGENCE

CVE-2025-59058

CVSS score5.9 MEDIUM
EPSS probability0.28%
CISA KEVNot currently listed
Published2025-09-12
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Description

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.

Weakness classification

  • CWE-208: Observable Timing Discrepancy

Primary references