CVE-2025-59058 | BDVDB-2026-293549 Detail

junkuriharahttpsig-rs

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.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact high, availability impact none. Attack vector: network.

Weaknesses#

CWE-208 Observable Timing Discrepancy

References#

Exploit#

No public exploit known

History#

Version 12025-09-12Record published in the CVE List.

Published

Published: 2025-09-12
Last modified: 2025-09-12

Vendor information

Vendor: junkurihara
Product: httpsig-rs

All junkurihara vulnerabilities

Score

5.9 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 20.9.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 0.0.19
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

5.9 Medium

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	High
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).