What’s Vulnerable › Vulnerabilities

CVE-2026-31898: jsPDF has a PDF Object Injection via FreeText color

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-18 · updated 2026-08-18
• Weakness: CWE-116

Description

jsPDF is a library to generate PDFs in JavaScript. Prior to version 4.2.1, user control of arguments of the `createAnnotation` method allows users to inject arbitrary PDF objects, such as JavaScript actions. If given the possibility to pass unsanitized input to the following method, a user can inject arbitrary PDF objects, such as JavaScript actions, which might trigger when the PDF is opened or interacted with the `createAnnotation`: `color` parameter. The vulnerability has been fixed in jsPDF@4.2.1. As a workaround, sanitize user input before passing it to the vulnerable API members.

Affected products

• parallax jsPDF: before 4.2.1 — fixed in 4.2.1

How to fix

Upgrade to a fixed version: parallax jsPDF 4.2.1. Check the vendor advisory for mitigations.

References

• https://github.com/parallax/jsPDF/blob/b1607a9391d4cd65ea7ade25998aea8345ae1be3/src/modules/annotations.js#L193-L208
• https://github.com/parallax/jsPDF/commit/4155c4819d5eca284168e51e0e1e81126b4f14b8
• https://github.com/parallax/jsPDF/releases/tag/v4.2.1
• https://github.com/parallax/jsPDF/security/advisories/GHSA-7x6v-j9x4-qf24
• https://access.redhat.com/errata/RHSA-2026:7110
• https://access.redhat.com/errata/RHSA-2026:7128
• https://access.redhat.com/security/cve/CVE-2026-31898
• https://bugzilla.redhat.com/show_bug.cgi?id=2448547
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31898.json

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