CVE-2026-25755

HIGH

jsPDF < 4.2.0 - Code Injection via addJS Method

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2026-25755. PoCs published by XiaomingX, absholi7ly.

AI-analyzed exploit summary This repository provides a detailed technical analysis of CVE-2026-25755, a PDF Object Injection vulnerability in jsPDF's `addJS()` function, including root cause analysis, vulnerable code snippets, and a proof-of-concept payload demonstrating the injection mechanism.

Description

jsPDF is a library to generate PDFs in JavaScript. Prior to 4.2.0, user control of the argument of the `addJS` method allows an attacker to inject arbitrary PDF objects into the generated document. By crafting a payload that escapes the JavaScript string delimiter, an attacker can execute malicious actions or alter the document structure, impacting any user who opens the generated PDF. The vulnerability has been fixed in [email protected]. As a workaround, escape parentheses in user-provided JavaScript code before passing them to the `addJS` method.

Exploits (2)

github WRITEUP 10 stars
by XiaomingX · pythonpoc
https://github.com/XiaomingX/data-cve-poc-py-v1/tree/main/2026/CVE-2026-25755

This repository provides a detailed technical analysis of CVE-2026-25755, a PDF Object Injection vulnerability in jsPDF's `addJS()` function, including root cause analysis, vulnerable code snippets, and a proof-of-concept payload demonstrating the injection mechanism.

Classification
Writeup 95%
Attack Type
Other
Complexity
Moderate
Reliability
Theoretical
Target: jsPDF < 4.2.0
No auth needed
Prerequisites: jsPDF library usage in a client-side application
devstral-2 · analyzed Feb 27, 2026 Full analysis →
nomisec WRITEUP
by absholi7ly · poc
https://github.com/absholi7ly/jsPDF-Object-Injection

This repository provides a detailed technical analysis of CVE-2026-25755, a PDF Object Injection vulnerability in jsPDF's `addJS()` function, including root cause analysis, vulnerable code snippets, and PoC payloads demonstrating the injection mechanism.

Classification
Writeup 95%
Attack Type
Other
Complexity
Moderate
Reliability
Theoretical
Target: jsPDF < 4.2.0
No auth needed
Prerequisites: jsPDF library usage in a client-side application
devstral-2 · analyzed Feb 24, 2026 Full analysis →

Scores

CVSS v3 8.1
EPSS 0.0003
EPSS Percentile 7.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-94 CWE-116
Status published
Products (2)
npm/jspdf 0 - 4.2.0npm
parall/jspdf < 4.2.0
Published Feb 19, 2026
Tracked Since Feb 19, 2026