CVE-2026-24133 — jspdf
Fix: parallax/jsPDF@ae4b93fCVE-2026-24133 is a CWE-770 vulnerability in jspdf. A fix is available for jspdf — see the affected versions and patch details below.
jsPDF Affected by Denial of Service (DoS) via Unvalidated BMP Dimensions in BMPDecoder
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-24133.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
jspdfnpmDescription
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 BMP file that results in out of memory errors and denial of service. Harmful BMP 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 BMP image data with large width/height headers
const payload = ...
const doc = new jsPDF();
doc.addImage(payload, "BMP", 0, 0, 100, 100);
Patches
The vulnerability has been fixed in jsPDF 4.1.0. Upgrade to jspdf@>=4.1.0.
Workarounds
Sanitize image data or URLs before passing it to the addImage method or one of the other affected methods.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | jspdf | all versions | 4.1.0npm install jspdf@4.1.0 |
Affected Products
jspdfparallDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for jspdf, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update jspdf to 4.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-24133 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
This MODERATE impact flaw in the jsPDF library, affecting Red Hat Advanced Cluster Security, allows a remote attacker to trigger a denial of service. By providing specially crafted BMP image data or URLs to the `addImage` or `html` methods, an attacker can cause the application to consume excessive memory, leading to…
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.Source: Red Hat security advisory for CVE-2026-24133 (CC BY 4.0)
Frequently Asked Questions
Is CVE-2026-24133 in your dependencies?
Find it across npm, including transitive dependencies.