CVE-2026-31938

jsPDF is a library to generate PDFs in JavaScript. Prior to version 4.2.1, user control of the `options` argument of the `output` function allows attackers to inject arbitrary HTML (such as scripts) into the browser context the created PDF is opened in. The vulnerability can be exploited in the following scenario: the attacker provides values for the output options, for example via a web interface. These values are then passed unsanitized (automatically or semi-automatically) to the attack victim. The victim creates and opens a PDF with the attack vector using one of the vulnerable method overloads inside their browser. The attacker can thus inject scripts that run in the victims browser context and can extract or modify secrets from this context. The vulnerability has been fixed in jspdf@4.2.1. As a workaround, sanitize user input before passing it to the output method.

CVSS v3 9.6 CRITICAL

9.6^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.8 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://github.com/parallax/jsPDF/commit/87a40bbd07e6b30575196370670b41f264aa78d7	Patch
https://github.com/parallax/jsPDF/releases/tag/v4.2.1	Product Release Notes
https://github.com/parallax/jsPDF/security/advisories/GHSA-wfv2-pwc8-crg5	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:parall:jspdf:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2026-03-18 04:17

Updated : 2026-03-18 18:02

NVD link : CVE-2026-31938

Mitre link : CVE-2026-31938

CVE.ORG link : CVE-2026-31938

JSON object : View

Products Affected

parall

jspdf

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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