Cross-site request forgery (CSRF) vulnerability in Webcit before 7.11 allows remote attackers to modify configurations and perform other actions as arbitrary users via unspecified vectors.
Multiple cross-site scripting (XSS) vulnerabilities in Webcit before 7.11 allow remote attackers to inject arbitrary web script or HTML via (1) the who parameter to showuser; and other vectors involving (2) calendar mode, (3) bulletin board mode, (4) room names, and (5) uploaded file names.
Format string vulnerability in the lprintf function in Citadel/UX 6.27 and earlier allows remote attackers to execute arbitrary code via format string specifiers sent to the server.
Citadel/UX 5.00 through 6.14 installs the database directory and files with world-read permissions, which could allow local users to bypass access controls and read unauthorized messages.
Buffer overflow in (1) lprintf and (2) cprintf in sysdep.c of Citadel/UX 5.90 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via attacks such as a long HELO command to the SMTP server.