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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 [email protected]. As a workaround, escape parentheses in user-provided JavaScript code before passing them to the `addJS` method.
Read the publisher's advisoryjsPDF 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 [email protected]. As a workaround, escape parentheses in user-provided JavaScript code before passing them to the `addJS` method.
Read the publisher's advisoryjsPDF 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 [email protected]. As a workaround, escape parentheses in user-provided JavaScript code before passing them to the `addJS` method.
Read the publisher's advisory### Impact 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. ```js import { jsPDF } from "jspdf"; const doc = new jsPDF(); // Payload: // 1. ) closes the JS string. // 2. > closes the current dictionary. // 3. /AA ... injects an "Additional Action" that executes on focus/open. const maliciousPayload = "console.log('test');) >> /AA << /O << /S /JavaScript /JS (app.alert('Hacked!')) >> >>"; doc.addJS(maliciousPayload); doc.save("vulnerable.pdf"); ``` ### Patches The vulnerability has been fixed in [email protected]. ### Workarounds Escape parentheses in user-provided JavaScript code before passing them to the `addJS` method. ### References https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-25755.md
Read the publisher's advisoryCISA KEV lists vulnerabilities known to be exploited. FIRST EPSS estimates the likelihood of exploitation in the next 30 days. An unavailable score does not mean zero risk.
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euvd · EUVD-2026-8109 · Published
euvd · EUVD-2026-8109 · Published
euvd · EUVD-2026-8109 · Published
euvd · EUVD-2026-8109 · Published
euvd · EUVD-2026-8109 · Published
euvd · EUVD-2026-8109 · Published
euvd · EUVD-2026-8109 · Published
euvd · EUVD-2026-8109 · Published
euvd · EUVD-2026-8109 · Published
euvd · EUVD-2026-8109 · Published
nvd · CVE-2026-25755 · Published
osv · GHSA-9vjf-qc39-jprp · Published
cve-program · CVE-2026-25755 · Published