RCE in Parall Jspdf
CVE-2026-25755
jsPDF is a library to generate PDFs in JavaScript. Prior to 4.2.0, 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. The vulnerability has been fixed in jspdf@4.2.0. As a workaround, escape parentheses in user-provided JavaScript code before passing them to the `addJS` method.
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.008 (54.0th 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 < 4.2.0
Weakness classification (CWE)
References
- https://github.com/parallax/jsPDF/security/advisories/GHSA-9vjf-qc39-jprp (x_refsource_CONFIRM, Vendor Advisory)
- https://github.com/parallax/jsPDF/commit/56b46d45b052346f5995b005a34af5dcdddd5437 (Patch, x_refsource_MISC)
- https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-25755.md (Exploit, x_refsource_MISC, Third Party Advisory, Mitigation)
- https://github.com/parallax/jsPDF/releases/tag/v4.2.0 (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-2026-25755?
- CVE-2026-25755 is a high-severity vulnerability in Parall Jspdf, classified under Code Injection. CVSS score: 8.1/10. Published 2026-02-19.
- How severe is CVE-2026-25755?
- High severity. CVSS v3 base score is 8.1 out of 10.