CVE WatchJul 9, 2026

CVE-2020-28707

The Stockdio Historical Chart plugin before 2.8.1 for WordPress is affected by Cross Site Scripting (XSS) via stockdio_chart_historical-wp.j

CVSS

6.1

Medium

EPSS

1.0%

p59

KEV

—

Exploit Today

0-100

Published: Jan 19, 2021 · Last modified: Jul 9, 2026 · CWE-79

EPSS · 30d

1.0%EPSS · 30 days1.4%

2026-06-302026-07-16

Technical 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.

Official references

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