jsPDF has a PDF Object Injection via Unsanitized Input in addJS Method
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.
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 jspdf@4.2.0.
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
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | jspdf | < 4.2.0 | 4.2.0 |
References
- https://github.com/parallax/jsPDF/security/advisories/GHSA-9vjf-qc39-jprp
- https://nvd.nist.gov/vuln/detail/CVE-2026-25755
- https://github.com/parallax/jsPDF/commit/56b46d45b052346f5995b005a34af5dcdddd5437
- https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-25755.md
- https://github.com/parallax/jsPDF
- https://github.com/parallax/jsPDF/releases/tag/v4.2.0
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N- Weakness (CWE)
CWE-116, CWE-94- Platform
- npm
- Package
jspdf- Disclosed
- 19.02.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-9vjf-qc39-jprp - CC BY 4.0
Vulnerability history: jspdf
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 15
- First → latest
- 03.2021 03.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 9
- Medium 4
Disclosures per year
- 2021: 3
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 2
- 2026: 10
-
jsPDF has a PDF Object Injection via Unsanitized Input in addJS Method this entry
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