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Vulnerabilities

Vulnerability · CVE-2025-59058

httpsig-rs is a Rust implementation of IETF RFC 9421 http message signatures.

Published Sep 12, 2025 · catalog updated Sep 12, 2025 · httpsig-rs is a Rust

Last checked Nov 7, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-59058. EPSS is 0.28%. Act only if a listed version of httpsig-rs is a Rust is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (httpsig-rs is a Rust).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.28%
Remediation
Version ranges on file
Affected products
vendor junkurihara httpsig-rs < 0.0.19

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor junkurihara httpsig-rs < 0.0.19< 0.0.19

How to fix CVE-2025-59058

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-59058. EPSS is 0.28%. Act only if a listed version of httpsig-rs is a Rust is installed.

Which versions are affected?

Compare what you have installed with junkurihara httpsig-rs < 0.0.19 < 0.0.19. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.28%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 12, 2025 · EUVD

    Detected

    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.

  2. Sep 12, 2025 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2025-59058

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-59058

    30-day exploitation probability 0.28%

    first.org
  • EUVDVulnerability recordEUVD-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 signa

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 23, 2026
  • CVE.orgOct 22, 2026
  • EUVDOct 22, 2026