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URL Redirection to Untrusted Site ('Open Redirect')


Severity Medium
Score 6.1/10


A vulnerability was found in moodle before 3.1.17, 3.2.x, 3.3.x and 3.4.x before 3.4.8, 3.5.x before 3.5.5 and 3.6.x before 3.6.3. Links within assignment submission comments would open directly (in the same window). Although links themselves may be valid, opening within the same window and without the no-referrer header policy made them more susceptible to exploits.

  • LOW
  • LOW
  • NONE
  • LOW
  • NONE

CWE-601 - Open Redirect

An open redirect attack employs a URL parameter, HTML refresh tags, or a DOM based location change to exploit the trust of a vulnerable domain to direct the users to a malicious website. The attack could lead to higher severity vulnerabilities such as unauthorized access control, account takeover, XSS, and more.

Advisory Timeline

  • Published