CVE-2026-25535
jsPDF Affected by Client-Side/Server-Side Denial of Service via Malicious GIF Dimensions
Impact
### 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: ```js 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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | jspdf | < 4.2.0 | 4.2.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Parall | Jspdf | before 4.2.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-25535.md
- https://github.com/parallax/jsPDF/commit/2e5e156e284d92c7d134bce97e6418756941d5e6
- https://github.com/parallax/jsPDF/releases/tag/v4.2.0
- https://github.com/parallax/jsPDF/security/advisories/GHSA-67pg-wm7f-q7fj
- https://access.redhat.com/errata/RHSA-2026:7110
- https://access.redhat.com/errata/RHSA-2026:7128
- https://access.redhat.com/security/cve/CVE-2026-25535
- https://bugzilla.redhat.com/show_bug.cgi?id=2440992
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25535.json
- https://github.com/advisories/GHSA-67pg-wm7f-q7fj
- https://nvd.nist.gov/vuln/detail/CVE-2026-25535