CVE-2023-27043

The email module of Python through 3.11.3 incorrectly parses e-mail addresses that contain a special character

Medium · published April 18, 2023

CVSS v3.1
5.3
EPSS
3%
Percentile
84.8
In the wild
Unconfirmed
What it is

The email module of Python through 3.11.3 incorrectly parses e-mail addresses that contain a special character. The wrong portion of an RFC2822 header is identified as the value of the addr-spec. In some applications, an attacker can bypass a protection mechanism in which application access is granted only after verifying receipt of e-mail to a specific domain (e.g., only @company.example.com addresses may be used for signup). This occurs in email/_parseaddr.py in recent versions of Python.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.02527 · 84.8th percentile
Published
2023-04-18T00:00Z
EPSS history
Timeline
  • 18 APR 00:00Z
    The email module of Python through 3.11.3 incorrectly parses e-mail addresses that contain a special character
    cvelistv5