Bug 2440992 (CVE-2026-25535)

Summary: CVE-2026-25535 jsPDF: denial of service via malicious GIF dimensions
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in jsPDF. The addImage and html methods accept user input in their first argument without proper sanitization. An attacker can supply a specially crafted GIF file, specifically with invalid width and height header values, forcing the application to allocate an excessive amount of memory, leading to an out-of-memory condition, causing an application crash and denial of service.
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Description OSIDB Bzimport 2026-02-19 15:01:40 UTC 
jsPDF is a library to generate PDFs in JavaScript. Prior to 4.2.0, 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 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, which lead to excessive memory allocation. Other affected methods are: `html`. The vulnerability has been fixed in jsPDF 4.2.0. As a workaround, sanitize image data or URLs before passing it to the addImage method or one of the other affected methods.