CVE-2020-28707

Public Exploit

Description

The Stockdio Historical Chart plugin before 2.8.1 for WordPress is affected by Cross Site Scripting (XSS) via stockdio_chart_historical-wp.js in wp-content/plugins/stockdio-historical-chart/assets/ because the origin of a postMessage() event is not validated. The stockdio_eventer function listens for any postMessage event. After a message event is sent to the application, this function sets the "e" variable as the event and checks that the types of the data and data.method are not undefined (empty) before proceeding to eval the data.method received from the postMessage. However, on a different website. JavaScript code can call window.open for the vulnerable WordPress instance and do a postMessage(msg,'*') for that object.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.60%
Vendor Advisory stockdio.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://stockdio.com vendor advisory
https://wordpress.org/plugins/stockdio-historical-chart/#developers third party advisory release notes
https://jondow.eu/cve-2020-28707-xss-in-stockdio-historical-chart-plugin-for-wordpress-before-version-281/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2020-28707?
CVE-2020-28707 has been scored as a medium severity vulnerability.
How to fix CVE-2020-28707?
To fix CVE-2020-28707, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-28707 being actively exploited in the wild?
It is possible that CVE-2020-28707 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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