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MonsterInsights

18known security flaws found in MonsterInsights
since November 2014

Safe from 11.1.0

Version 11.1.0 or later fixes all of them. A site on an older version is open to them.

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When they were found.

Advisory: Cross-site scripting, November 2014Advisory: Cross-site scripting, March 2015Advisory: Cross-site scripting, March 2015Advisory: Cross-site scripting, April 2015Advisory: Cross-site scripting, August 2015Advisory: Cross-site scripting, September 2018Advisory: Cross-site scripting, December 2018Minor: Cross-site scripting, December 2022Minor: Cross-site scripting, January 2023Minor: Cross-site scripting, May 2023Minor: Missing checks, January 2024Major: Missing checks, May 2026Advisory: Missing checks, August 20262014201620182020202220242026

DangerousMajorMinorAdvisory

What they could let someone do.

What could happen

  • Missing checks

    Someone could do things only an administrator should: change settings, see private data, or give themselves more rights.

    How: Part of the software forgets to check who is asking before it does what was asked.

    Read about it here
  • Cross-site scripting

    Someone could make your pages run their own script in visitors' browsers, to steal logins, show a fake payment form or send people to a scam site.

    How: The software puts text it was sent back onto a page without making it safe first, so a script hidden in a link, form or comment runs as if it were part of your site.

    Read about it here
Every known flaw, newest first (18)
  1. August 2026AdvisoryMissing checksFixed in 11.1.0. No login needed.
  2. May 2026MajorMissing checksFixed in 10.1.3. Needs a login on the site.
  3. January 2024MinorMissing checksFixed in 8.22.0. Needs a login on the site.
  4. May 2023MinorCross-site scriptingFixed in 8.14.1. Needs a login on the site.
  5. January 2023MinorCross-site scriptingFixed in 8.12.1. Needs a login on the site.
  6. December 2022MinorCross-site scriptingFixed in 8.9.1. No login needed.
  7. December 2018AdvisoryCross-site scriptingFixed in 7.2.0.
  8. September 2018AdvisoryCross-site scriptingFixed in 7.2.0.
  9. August 2015AdvisoryCross-site scriptingFixed in 5.4.5.
  10. April 2015AdvisoryCross-site scriptingFixed in 5.4.
  11. March 2015AdvisoryCross-site scriptingFixed in 5.3.3.
  12. March 2015AdvisoryCross-site scriptingFixed in 5.3.3.
  13. November 2014AdvisoryCross-site scriptingFixed in 5.1.3.
  14. Date not knownAdvisoryCross-site scriptingFixed in 7.2.0.
  15. Date not knownAdvisoryCross-site scriptingFixed in 5.4.5.
  16. Date not knownAdvisoryCross-site scriptingFixed in 5.4. No login needed.
  17. Date not knownAdvisoryCross-site scriptingFixed in 5.3.3.
  18. Date not knownAdvisoryCross-site scriptingFixed in 5.3.3.

From the public lists of known flaws, checked daily. A flaw is listed once it is made public, often after a fix is out.

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