6.1 Medium
AI Score
Confidence
Low
0.002 Low
EPSS
Percentile
52.4%
The ssl.match_hostname function in CPython (aka Python) before 2.7.9 and 3.x before 3.3.3 does not properly handle wildcards in hostnames, which might allow man-in-the-middle attackers to spoof servers via a crafted certificate.