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CVE-2026-25755 PoC — jsPDF has PDF Object Injection via Unsanitized Input in addJS Method

Source
https://github.com/absholi7ly/jsPDF-Object-Injection
Associated Vulnerability
Title: jsPDF has PDF Object Injection via Unsanitized Input in addJS Method (CVE-2026-25755)
Description:jsPDF is a library to generate PDFs in JavaScript. Prior to 4.2.0, user control of the argument of the `addJS` method allows an attacker to inject arbitrary PDF objects into the generated document. By crafting a payload that escapes the JavaScript string delimiter, an attacker can execute malicious actions or alter the document structure, impacting any user who opens the generated PDF. The vulnerability has been fixed in jspdf@4.2.0. As a workaround, escape parentheses in user-provided JavaScript code before passing them to the `addJS` method.
Description
CVE-2026-25755 A critical PDF Object Injection vulnerability in jsPDF allows attackers to inject arbitrary PDF objects through the addJS() function, enabling AcroJS sandbox bypass and automatic script execution when PDFs are opened.
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