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Vulnerabilities

Vulnerability · CVE-2026-26275

httpsig-hyper is a hyper extension for http message signatures.

Published Feb 19, 2026 · catalog updated Feb 20, 2026 · httpsig-hyper is a hyper

Last checked Nov 12, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-26275. EPSS is 0.18%. Act only if a listed version of httpsig-hyper is a hyper 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-hyper is a hyper).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.18%
Remediation
Version ranges on file
Affected products
vendor junkurihara httpsig-rs < 0.0.23

httpsig-hyper is a hyper extension for http message signatures. An issue was discovered in prior to version 0.0.23 where Digest header verification could incorrectly succeed due to misuse of Rust's macro. Specifically, the comparison treated as a pattern binding rather than a value comparison, resulting in unconditional success of the match expression. As a consequence, digest verification could incorrectly return success even when the computed digest did not match the expected value. Applications relying on Digest verification as part of HTTP message signature validation may therefore fail to

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 < 0.0.23< 0.0.23

How to fix CVE-2026-26275

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-2026-26275. EPSS is 0.18%. Act only if a listed version of httpsig-hyper is a hyper is installed.

Which versions are affected?

Compare what you have installed with junkurihara httpsig-rs < 0.0.23 < 0.0.23. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.18%. 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. Feb 19, 2026 · EUVD

    Detected

    httpsig-hyper is a hyper extension for http message signatures. An issue was discovered in prior to version 0.0.23 where Digest header verification could incorrectly succeed due to misuse of Rust's macro. Specifically, the comparison treated as a pattern binding rather than a value comparison, resulting in unconditional success of the match expression. As a consequence, digest verification could i

  2. Feb 20, 2026 · EUVD

    Updated

    httpsig-hyper is a hyper extension for http message signatures. An issue was discovered in prior to version 0.0.23 where Digest header verification could incorrectly succeed due to misuse of Rust's macro. Specifically, the comparison treated as a pattern binding rather than a value comparison, resulting in unconditional success of the match expression. As a consequence, digest verification could i

Sources

  • CVE.orgVulnerability recordCVE-2026-26275

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-26275

    30-day exploitation probability 0.18%

    first.org
  • EUVDVulnerability recordEUVD-2026-8435

    httpsig-hyper is a hyper extension for http message signatures. An issue was discovered in prior to version 0.0.23 where Digest header verification could incorrectly succeed due to misuse of Rust's macro. Specifically, the comparison treated as a pattern binding rather than a val

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 12, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 9, 2026
  • CVE.orgNov 9, 2026
  • EUVDNov 9, 2026