CVE-2025-59058
httpsig-rs's HMAC verification is vulnerable to timing attack
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 5.9EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
12 Sep 2025Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected products
junkurihara · httpsig-rsWant to know if your infrastructure is exposed to this?
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