← SwissSign AG cases
Bugzilla #1428877 Certificate Misissuance

SwissSign: Invalid DNSName in SAN

RESOLVED FIXED SwissSign AG
AI Summary

The case concerns SwissSign AG's issuance of certificates containing an invalid Subject Alternative Name (SAN). The issue was identified through an automated checker, leading to the revocation of three affected certificates. SwissSign has since implemented a fix to their validation process, ensuring that future certificates comply with domain name standards. The resolution involved enhancing their regular expression checks and conducting a thorough linting of their certificate database, which confirmed no further issues.

Model: gpt-4o-mini Generated: 2026-06-13 17:42 UTC Confidence: 0.90
Chronology
  1. SwissSign identified the issue through their cablint checker.
  2. SwissSign provided a detailed incident report.
  3. SwissSign implemented a software fix to address the validation issue.
  4. SwissSign confirmed completion of linting their entire certificate database.
  5. The additional code fix was implemented and the case was resolved.
Participants
Wayne Thayer Reinhard Dietrich Mike Guenther Ryan Sleevi
External References
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