Description
Drupal 6.x before 6.13 does not prevent users from modifying user signatures after the associated comment format has been changed to an administrator-controlled input format, which allows remote authenticated users to inject arbitrary web script, HTML, and possibly PHP code via a crafted user signature.
Remediation
References
Related Vulnerabilities
WordPress Plugin WP Symposium Pro Social Network Cross-Site Scripting (16.01)
WordPress Plugin Count per Day Multiple Cross-Site Scripting Vulnerabilities (3.5.4)
WordPress Plugin Safe Editor Unspecified Vulnerability (1.1)
WordPress Plugin Job Manager Multiple Cross-Site Scripting Vulnerabilities (0.7.18)