YaBB Bulletin Board 9.1.2000 allows remote attackers to read arbitrary files via a .. (dot dot) attack.
https://exchange.xforce.ibmcloud.com/vulnerabilities/5254
http://archives.neohapsis.com/archives/bugtraq/2000-09/0072.html
Source: Mitre, NVD
Published: 2000-11-14
Updated: 2017-10-10
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity: High