Security Advisory
CVE-2018-18531
9.8
CRITICAL
Vulnerability Description
text/impl/DefaultTextCreator.java, text/impl/ChineseTextProducer.java, and text/impl/FiveLetterFirstNameTextCreator.java in kaptcha 2.3.2 use the Random (rather than SecureRandom) function for generating CAPTCHA values, which makes it easier for remote attackers to bypass intended access restrictions via a brute-force approach.
Published Date
October 19, 2018
Official Source
NIST NVD Advisory