Information Exposure Affecting sysend package, versions <1.10.0


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
0.15% (53rd percentile)

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  • Snyk IDSNYK-JS-SYSEND-2422794
  • published15 Mar 2022
  • disclosed15 Mar 2022
  • creditUnknown

Introduced: 15 Mar 2022

CVE-2022-24762  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade sysend to version 1.10.0 or higher.

Overview

sysend is a Web application synchronization between different tabs

Affected versions of this package are vulnerable to Information Exposure when cross-origin communication is used, which allows for communication interception. Exploitation is limited to the communication occurring in the same browser.

PoC

sysend.proxy('http://jcubic.pl');
window.addEventListener('message', (e) => {
    console.log(e);
});

CVSS Scores

version 3.1