CVEvulnerability

CVE-2018-18531

9.8 CRITICAL Published 2018-10-19 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-10-19
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
9.8 CRITICAL — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-330

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.

Affected configurations

• kaptcha project kaptcha 2.3.2

Related

Weakness · CWE (1)

  • CWE-330 Use of Insufficiently Random Values weakness

References