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CVE-2026-25535— jsPDF Affected by Client-Side/Server-Side Denial of Service via Malicious GIF Dimensions

Quick assessment

Affected
parallax jsPDF
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

jsPDF是Parallax开源的一款基于JavaScript的PDF文档生成库。 jsPDF 4.2.0之前版本存在安全漏洞，该漏洞源于addImage方法对用户输入处理不当，可能导致内存耗尽和拒绝服务。

CVSS 8.7 · High EPSS 0.92% · P59

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
parallax jsPDF < 4.2.0 affected
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I. Basic Information for CVE-2026-25535

Vulnerability Information
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Vulnerability Title
jsPDF Affected by Client-Side/Server-Side Denial of Service via Malicious GIF Dimensions
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
jsPDF 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
jsPDF是Parallax开源的一款基于JavaScript的PDF文档生成库。 jsPDF 4.2.0之前版本存在安全漏洞，该漏洞源于addImage方法对用户输入处理不当，可能导致内存耗尽和拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
parallax jsPDF < 4.2.0 -

II. Public POCs for CVE-2026-25535

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 11801 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
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III. Intelligence Information for CVE-2026-25535

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Other References for CVE-2026-25535 (1)

Same Patch Batch · parallax · 2026-02-19 · 3 CVEs total

CVE-2026-25940 8.1 HIGH jsPDF's PDF Injection in AcroForm module allows Arbitrary JavaScript Execution (RadioButto
CVE-2026-25755 8.1 HIGH jsPDF has PDF Object Injection via Unsanitized Input in addJS Method

IV. Related Vulnerabilities

Same product: jsPDF
Same vendor: parallax
Same weakness: CWE-400

V. Comments for CVE-2026-25535

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