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CVE-2026-31898— jsPDF has a PDF Object Injection via FreeText color

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 4.2.1之前版本存在安全漏洞，该漏洞源于用户控制createAnnotation方法的参数可能允许注入任意PDF对象，例如JavaScript操作，可能导致安全问题。

CVSS 8.1 · High EPSS 0.62% · P48

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
parallax jsPDF < 4.2.1 affected
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I. Basic Information for CVE-2026-31898

Vulnerability Information
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Vulnerability Title
jsPDF has a PDF Object Injection via FreeText color
Source: CVE Program / CVE List V5
Vulnerability Description
jsPDF is a library to generate PDFs in JavaScript. Prior to version 4.2.1, user control of arguments of the `createAnnotation` method allows users to inject arbitrary PDF objects, such as JavaScript actions. If given the possibility to pass unsanitized input to the following method, a user can inject arbitrary PDF objects, such as JavaScript actions, which might trigger when the PDF is opened or interacted with the `createAnnotation`: `color` parameter. The vulnerability has been fixed in jsPDF@4.2.1. As a workaround, sanitize user input before passing it to the vulnerable API members.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对输出编码和转义不恰当
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 4.2.1之前版本存在安全漏洞，该漏洞源于用户控制createAnnotation方法的参数可能允许注入任意PDF对象，例如JavaScript操作，可能导致安全问题。
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 < 4.2.1 -

II. Public POCs for CVE-2026-31898

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7608 chars
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Trigger conditions & impact
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III. Intelligence Information for CVE-2026-31898

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Patches & Fixes for CVE-2026-31898 (2)

Vendor Advisories for CVE-2026-31898 (1)

Vendor Pages for CVE-2026-31898 (1)

IV. Related Vulnerabilities

Same product: jsPDF
Same vendor: parallax
Same weakness: CWE-116

V. Comments for CVE-2026-31898

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