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CVE-2026-25940

CriticalPublished

jsPDF's PDF Injection in AcroForm module allows Arbitrary JavaScript Execution (RadioButton.createOption and "AS" property)

Published: Feb 19, 2026
Updated: Sep 7, 2026
Assigning CNA: GitHub_M
Evidence observed: Aug 25, 2026

Primary CVSS

9.6/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS probability estimate

0.4%

Low · next 30 days

Percentile: 36.9%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

jsPDF is a library to generate PDFs in JavaScript. Prior to 4.2.0, 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. The vulnerability has been fixed in [email protected]. As a workaround, sanitize user input before passing it to the vulnerable API members.

Sources

CVE-2026-25940PoC
Proof-of-concept for CVE-2026-25940 demonstrating embedded JavaScript execution via crafted AcroForm radio button appearances in PDF viewers, with Node.js generator and browser viewer harness.

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