Silverstripe XSS Vulnerabilities
Date: 2022-05
Affected: composer/silverstripe/framework, composer/silverstripe/framework
Attack vector: xss
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2012-4968
CWE: CWE-79

Multiple cross-site scripting (XSS) vulnerabilities in SilverStripe 2.3.x before 2.3.13 and 2.4.x before 2.4.7 allow remote attackers to inject arbitrary web script or HTML via 1. a crafted string to the `AbsoluteLinks` 1. `BigSummary` 1. `ContextSummary` 1. `EscapeXML` 1. `FirstParagraph` 1. `FirstSentence` 1. `Initial` 1. `LimitCharacters` 1. `LimitSentences` 1. `LimitWordCount` 1. `LimitWordCountXML` 1. `Lower` 1. `LowerCase` 1. `NoHTML` 1. `Summary` 1. `Upper` 1. `UpperCase`, or 1. `URL` method in a template, different vectors than CVE-2012-0976.


Mitigations:

Architectural layers (MAESTRO):