CVE-2020-27608

Medium

Description

In BigBlueButton before 2.2.28 (or earlier), uploaded presentations are sent to clients without a Content-Type header, which allows XSS, as demonstrated by a .png file extension for an HTML document.

SeverityMedium
CVSS6.1
Exploit probability—
ProductBigbluebutton
PublishedOct 21, 2020
First seenOct 21, 2020

How to fix

Update
  • bigbluebutton bigbluebutton2.2.28 or later

Affected products

ProductAffected versionsFixed in
bigbluebutton bigbluebuttonv < 2.2.282.2.28

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

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