Vulnerability in Junkurihara Httpsig-Rs
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.
EPSS: 0.003 (18.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Junkurihara Httpsig-rs — versions < 0.0.19
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-59058?
- CVE-2025-59058 is a medium-severity vulnerability in Junkurihara Httpsig-Rs, classified under CWE-208. CVSS score: 5.9/10. Published 2025-09-12.
- How severe is CVE-2025-59058?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2025-59058 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.