CVE-2026-24043
jsPDF Vulnerable to Stored XMP Metadata Injection (Spoofing & Integrity Violation)
Description
### Impact User control of the first argument of the `addMetadata` function allows users to inject arbitrary XML. If given the possibility to pass unsanitized input to the `addMetadata` method, a user can inject arbitrary XMP metadata into the generated PDF. If the generated PDF is signed, stored or otherwise processed after, the integrity of the PDF can no longer be guaranteed. Example attack vector: ```js import { jsPDF } from "jspdf" const doc = new jsPDF() // Input a string that closes the current XML tag and opens a new one. // We are injecting a fake "dc:creator" (Author) to spoof the document source. const maliciousInput = '</jspdf:metadata></rdf:Description>' + '<rdf:Description xmlns:dc="http://purl.org/dc/elements/1.1/">' + '<dc:creator>TRUSTED_ADMINISTRATOR</dc:creator>' + // <--- Spoofed Identity '</rdf:Description>' + '<rdf:Description><jspdf:metadata>' // The application innocently adds the user's input to the metadata doc.addMetadata(maliciousInput, "http://valid.namespace") doc.save("test.pdf") ``` ### Patches The vulnerability has been fixed in jsPDF@4.1.0 ### Workarounds Sanitize user input before passing it to the `addMetadata` method: escape XML entities. For example: ```js let input = "..." input = input .replace(/&/g, "&") .replace(/</g, "<") .replace(/>/g, ">") .replace(/"/g, """) .replace(/'/g, "'") doc.addMetadata(input) ```
How to fix CVE-2026-24043
To remediate CVE-2026-24043, upgrade the affected package to a fixed version below.
- —upgrade to 4.1.0 or later
Is CVE-2026-24043 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 4.1.0