Related Vulnerabilities: CVE-2018-1999007  

Stapler is the web framework used by Jenkins to route HTTP requests. When its debug mode is enabled, HTTP 404 error pages display diagnostic information. Those error pages did not escape parts of URLs they displayed before Jenkins 2.133, in rare cases resulting in a cross-site scripting vulnerability.

Severity Medium

Remote Yes

Type Cross-site scripting

Description

Stapler is the web framework used by Jenkins to route HTTP requests. When its debug mode is enabled, HTTP 404 error pages display diagnostic information. Those error pages did not escape parts of URLs they displayed before Jenkins 2.133, in rare cases resulting in a cross-site scripting vulnerability.

AVG-738 jenkins 2.132-1 2.133-1 High Fixed

21 Jul 2018 ASA-201807-14 AVG-738 jenkins High multiple issues

https://jenkins.io/security/advisory/2018-07-18/