Newsletter <= 3.8.2 - Open Redirect

4.3
URL Redirection to Untrusted Site ('Open Redirect')
CVSS 4.3 (Medium)
Publicly Published March 30, 2015
Last Updated January 22, 2024
Researcher James Hooker

Description

The Newsletter plugin is susceptible to an Open Redirect vulnerability. This issue is due to the fact user input it taken, and trusted, without validation. This user input is used when tracking link clicks, via the ‘newsletter/statistics/link.php’ script. User input is Base64 encoded, and split on the ‘;’ character, the third column of which can be manipulated in order to control where the user is redirected to.

References

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Vulnerability Details for Newsletter – Send awesome emails from WordPress

Software Type Plugin
Software Slug newsletter (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.8.3, or a newer patched version
Affected Version
  • <= 3.8.2
Patched Version
  • 3.8.3

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