CVE-2025-59058

MEDIUM

httpsig-rs < 0.0.19 - Timing Attack via HMAC Signature Comparison

Title source: llm
STIX 2.1

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.

References (2)

Core 2

Scores

CVSS v3 5.9
EPSS 0.0026
EPSS Percentile 17.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-208
Status published
Products (2)
crates.io/httpsig 0 - 0.0.19crates.io
junkurihara/httpsig-rs < 0.0.19
Published Sep 12, 2025
Tracked Since Feb 18, 2026