CVE-2012-4271: Mark Jaquith Bad Behavior

Medium severity, CVSS 4.3. EPSS: 2% chance of exploitation in the next 30 days.

Multiple cross-site scripting (XSS) vulnerabilities in bad-behavior-wordpress-admin.php in the Bad Behavior plugin before 2.0.47 and 2.2.x before 2.2.5 for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) PATH_INFO, (2) httpbl_key, (3) httpbl_maxage, (4) httpbl_threat, (5) reverse_proxy_addresses, or (6) reverse_proxy_header parameter.

Affected products

• Mark Jaquith Bad Behavior: up to and including 2.0.46; version 2.2.0 only; version 2.2.1 only; version 2.2.2 only; version 2.2.3 only; version 2.2.4 only
• WordPress WordPress: affected versions not specified

Published 2012-08-13. Last modified 2026-06-16.