CVE-2023-27043
CVSS v3
5.3
MEDIUM
EPSS Score
0.2 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
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.
Technical details
- Published
- 2023-04-19
Frequently asked questions
What is CVE-2023-27043?
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.
Is CVE-2023-27043 actively exploited?
Active exploitation of CVE-2023-27043 has not been confirmed. The EPSS score is 0.2%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2023-27043?
CVE-2023-27043 has a CVSS v3 base score of 5.3 (MEDIUM severity).
Is CVE-2023-27043 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 500 free checks/month · Free API key
Other 2023 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).