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.
Published: 2025-09-12
Score: 5.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-29041 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.
Github GHSA Github GHSA GHSA-q7pg-9pr4-mrp2 httpsig-rs: HMAC verification is vulnerable to timing attack
History

Fri, 12 Sep 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 12 Sep 2025 13:30:00 +0000

Type Values Removed Values Added
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.
Title httpsig-rs's HMAC verification is vulnerable to timing attack
Weaknesses CWE-208
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-09-12T13:45:48.203Z

Reserved: 2025-09-08T16:19:26.173Z

Link: CVE-2025-59058

cve-icon Vulnrichment

Updated: 2025-09-12T13:43:36.110Z

cve-icon NVD

Status : Deferred

Published: 2025-09-12T14:15:41.773

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-59058

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses