jsPDF Affected by Client-Side/Server-Side Denial of Service via Malicious GIF Dimensions
Impact
User control of the first argument of the addImage method results in denial of service.
If given the possibility to pass unsanitized image data or URLs to the addImage method, a user can provide a harmful GIF file that results in out of memory errors and denial of service. Harmful GIF files have large width and/or height entries in their headers, wich lead to excessive memory allocation.
Other affected methods are: html.
Example attack vector:
import { jsPDF } from "jspdf"
// malicious GIF image data with large width/height headers
const payload = ...
const doc = new jsPDF();
doc.addImage(payload, "GIF", 0, 0, 100, 100);Patches
The vulnerability has been fixed in jsPDF 4.1.1. Upgrade to jspdf@>=4.2.0.
Workarounds
Sanitize image data or URLs before passing it to the addImage method or one of the other affected methods.
References
https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-25535.md
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | jspdf | < 4.2.0 | 4.2.0 |
References
- https://github.com/parallax/jsPDF/security/advisories/GHSA-67pg-wm7f-q7fj
- https://nvd.nist.gov/vuln/detail/CVE-2026-25535
- https://github.com/parallax/jsPDF/commit/2e5e156e284d92c7d134bce97e6418756941d5e6
- https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-25535.md
- https://github.com/parallax/jsPDF
- https://github.com/parallax/jsPDF/releases/tag/v4.2.0
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N- Weakness (CWE)
CWE-770- Platform
- npm
- Package
jspdf- Disclosed
- 19.02.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-67pg-wm7f-q7fj - CC BY 4.0
Vulnerability history: jspdf
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 15
- First → latest
- 03.2021 03.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 9
- Medium 4
Disclosures per year
- 2021: 3
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 2
- 2026: 10
-
jsPDF Affected by Client-Side/Server-Side Denial of Service via Malicious GIF Dimensions this entry
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