RCE in Parall Jspdf
CVE-2026-31898
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.
EPSS: 0.004 (28.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.
Affected products
- Parall Jspdf
- Parallax Jspdf — versions < 4.2.1
Weakness classification (CWE)
References
- https://github.com/parallax/jsPDF/security/advisories/GHSA-7x6v-j9x4-qf24 (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
- https://github.com/parallax/jsPDF/commit/4155c4819d5eca284168e51e0e1e81126b4f14b8 (Patch, x_refsource_MISC)
- https://github.com/parallax/jsPDF/blob/b1607a9391d4cd65ea7ade25998aea8345ae1be3/src/modules/annotations.js#L193-L208 (Patch, x_refsource_MISC)
- https://github.com/parallax/jsPDF/releases/tag/v4.2.1 (x_refsource_MISC, Release Notes)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-31898?
- CVE-2026-31898 is a high-severity vulnerability in Parall Jspdf, classified under Improper Encoding or Escaping of Output. CVSS score: 8.1/10. Published 2026-03-18.
- How severe is CVE-2026-31898?
- High severity. CVSS v3 base score is 8.1 out of 10.