Code injection

2023-10-2315:15:00

PRIOn knowledge base

www.prio-n.com

vue.js

devtools extension

code injection

vulnerability

postmessage api

screenshot data

malicious web page

iframe

sensitive resource

base64 encoded

nvd

4.7 Medium

AI Score

Confidence

High

0.0005 Low

EPSS

Percentile

17.1%

JSON

The Vue.js Devtools extension was found to leak screenshot data back to a malicious web page via the standard postMessage() API. By creating a malicious web page with an iFrame targeting a sensitive resource (i.e. a locally accessible file or sensitive website), and registering a listener on the web page, the extension sent messages back to the listener, containing the base64 encoded screenshot data of the sensitive resource.