CVE-2021-4221

If a domain name contained a RTL character, it would cause the domain to be rendered to the right of the path

Medium · published December 22, 2022

CVSS v3.1
4.3
EPSS
0%
Percentile
36.2
In the wild
Unconfirmed
What it is

If a domain name contained a RTL character, it would cause the domain to be rendered to the right of the path. This could lead to user confusion and spoofing attacks. <br>*This bug only affects Firefox for Android. Other operating systems are unaffected.*<br>*Note*: Due to a clerical error this advisory was not included in the original announcement, and was added in Feburary 2022. This vulnerability affects Firefox < 92.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00430 · 36.2th percentile
Published
2022-12-22T00:00Z
EPSS history
Timeline
  • 22 DEC 00:00Z
    If a domain name contained a RTL character, it would cause the domain to be rendered to the right of the path
    cvelistv5