CVE-2026-31898: Parall Jspdf

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

jsPDF is a library to generate PDFs in JavaScript. Prior to version 4.2.1, user control of arguments of the `createAnnotation` method allows users to inject arbitrary PDF objects, such as JavaScript actions. If given the possibility to pass unsanitized input to the following method, a user can inject arbitrary PDF objects, such as JavaScript actions, which might trigger when the PDF is opened or interacted with the `createAnnotation`: `color` parameter. The vulnerability has been fixed in jsPDF@4.2.1. As a workaround, sanitize user input before passing it to the vulnerable API members.

Affected products

• Parall Jspdf: before 4.2.1 (fixed in 4.2.1)

Published 2026-03-18. Last modified 2026-08-18.