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Joplin through version 1.0.184 is vulnerable to an arbitrary file read vulnerability that can be triggered via a cross-site scripting (XSS) vector. An attacker able to inject malicious JavaScript into the application can leverage the XSS to read arbitrary files from the local filesystem, potentially exposing sensitive user data.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository provides a proof-of-concept exploit for CVE-2020-9038, a vulnerability in the Joplin note-taking application. The exploit is implemented in JavaScript (xss/exploit.js) and demonstrates how an attacker can use an XSS vulnerability to read arbitrary files from the victim's local filesystem using XMLHttpRequest with a file:// URI. The README.md provides references to the CVE and related resources. The xss/SECRET.txt file is a sample file intended to be targeted by the exploit. The exploit is a POC and requires the victim to execute attacker-supplied JavaScript in a vulnerable Joplin environment, typically via an XSS vector. The main capability is local file read, and the exploit targets files such as 'C:/Users/[YOUR-USERNAME]/Desktop/SECRET.TXT' and 'C:/Windows/System32/drivers/etc/hosts'.
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