CVE-2019-13127: XSS
An issue was discovered in mxGraph through 4.0.0, related to the "draw.io Diagrams" plugin before 8.3.14 for Confluence and other products. Improper input validation/sanitization of a color field leads to XSS. This is associated with javascript/examples/grapheditor/www/js/Dialogs.js.
Other sources
mxGraph through 4.0.0, related to the draw.io Diagrams plugin before 8.3.14 for Confluence and other products, is vulnerable to cross-site scripting. draw.io Diagrams allows the creation and editing of draw.io-based diagrams in Confluence. Among other things, it allows to set the background color of text displayed in the diagram. The color provided by the user is notproperly sanitized, leading to HTML and JavaScript code to be displayed "as it is" to visitors of the page. This allows attackers to execute JavaScript code in the context of the visitor's browser and session and to e.g. run Confluence command under the visitor's user or attack the visitor's browser.
Proof of Concept (PoC):
1. Create a new draw.io Diagram, add an element and edit its background color and enter some text to the element 2. Enter the following "color": onMouseOver=alert(1) a= 3. Save and view the resulting diagram, moving your mouse over the text
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2019-13127?
CVE-2019-13127 has been classified as a moderate severity vulnerability due to its potential for Cross-Site Scripting (XSS).
How do I fix CVE-2019-13127?
To fix CVE-2019-13127, update mxGraph to version 4.0.1 or later, and the Draw.io Diagrams plugin to version 8.3.14 or later.
What impact does CVE-2019-13127 have on affected systems?
CVE-2019-13127 allows for Cross-Site Scripting (XSS), which can potentially lead to unauthorized actions or data exposure on affected systems.
Which versions are affected by CVE-2019-13127?
CVE-2019-13127 affects mxGraph versions up to 4.0.0 and the Draw.io Diagrams plugin versions prior to 8.3.14.
What components are involved in CVE-2019-13127?
CVE-2019-13127 involves the mxGraph library and the Draw.io Diagrams plugin for Confluence.