Vulnerability Database

314,343

Total vulnerabilities in the database

CVE-2021-43533

When parsing internationalized domain names, high bits of the characters in the URLs were sometimes stripped, resulting in inconsistencies that could lead to user confusion or attacks such as phishing. This vulnerability affects Firefox < 94.

  • Published: Dec 8, 2021
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-43533
  • Severity: Low
  • Exploit:

CVSS v3:

  • Severity: Low
  • Score: 4.3
  • AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

CVSS v2:

  • Severity: Low
  • Score: 4.3
  • AV:N/AC:M/Au:N/C:N/I:P/A:N

No CWE or OWASP classifications available.

Software From Fixed in
mozilla / firefox - 94.0