Mendbird
Menu

The plugin register. Used on 2 million+ sites

All in One SEO

44known security flaws found in All in One SEO
since May 2014

Safe from 5.0.2.1

Version 5.0.2.1 or later fixes all of them. A site on an older version is open to them.

Or let us look for you

Free, with no sign up. About ten seconds, and nothing on your site is touched. See an example report

When they were found.

Advisory: Missing checks, May 2014Advisory: Cross-site scripting, May 2014Advisory: Missing checks, May 2014Minor: Cross-site scripting, August 2014Advisory: Information leak, January 2015Advisory: Cross-site scripting, April 2015Advisory: Cross-site scripting, May 2015Advisory: Missing checks, May 2015Advisory: a security flaw, September 2015Advisory: Cross-site scripting, July 2016Advisory: a security flaw, July 2016Advisory: Cross-site scripting, July 2016Advisory: a security flaw, July 2016Advisory: a security flaw, July 2016Advisory: Cross-site scripting, October 2018Minor: Cross-site scripting, October 2019Minor: Cross-site scripting, July 2020Major: Running code, May 2021Major: Missing checks, December 2021Minor: Database injection, December 2021Minor: Forged requests, September 2022Minor: Cross-site scripting, February 2023Minor: Cross-site scripting, February 2023Minor: Cross-site scripting, April 2024Minor: Cross-site scripting, April 2024Minor: Cross-site scripting, May 2025Minor: Information leak, September 2025Minor: Missing checks, September 2025Minor: Missing checks, November 2025Minor: Information leak, November 2025Major: Database injection, December 2025Minor: Missing checks, January 2026Minor: Information leak, May 2026Advisory: Missing checks, June 2026Minor: Cross-site scripting, September 2026Minor: Cross-site scripting, September 2026Minor: Running code, October 2026Minor: a security flaw, October 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
  • Running code

    Someone could run their own code on the server and take the site over: add malware, send spam, steal data, or use it to attack others.

    How: Part of the software treats something it was sent as instructions to follow, or keeps an uploaded file somewhere it can be run.

    Read about it here
  • Database injection

    Someone could read or change what is in the site's database: customer details, orders, password records, or a new administrator account.

    How: The software builds its questions to the database out of what visitors type, so carefully written input changes the question itself.

    Read about it here
Every known flaw, newest first (44)
  1. October 2026MinorA security flawFixed in 5.0.2.1. No login needed.
  2. October 2026MinorRunning codeFixed in 5.0.2.1. No login needed.
  3. September 2026MinorCross-site scriptingFixed in 5.0.0.1. Needs a login on the site.
  4. September 2026MinorCross-site scriptingFixed in 5.0.2. No login needed.
  5. June 2026AdvisoryMissing checksFixed in 4.9.9.
  6. May 2026MinorInformation leakFixed in 4.9.7.1. Needs a login on the site (Contributor+).
  7. January 2026MinorMissing checksFixed in 4.9.3. Needs a login on the site (Contributor+).
  8. December 2025MajorDatabase injectionFixed in 4.9.1.1. Needs a login on the site (Contributor+).
  9. November 2025MinorInformation leakFixed in 4.8.7. Needs a login on the site (Subscriber+).
  10. November 2025MinorMissing checksFixed in 4.9.0. Needs a login on the site (Contributor+).
  11. September 2025MinorInformation leakFixed in 4.8.7.2. Needs a login on the site.
  12. September 2025MinorMissing checksFixed in 4.8.7.2. Needs a login on the site.
  13. May 2025MinorCross-site scriptingFixed in 4.8.2. Needs a login on the site (Contributor+).
  14. April 2024MinorCross-site scriptingFixed in 4.6.1.1. Needs a login on the site (Contributor+).
  15. April 2024MinorCross-site scriptingFixed in 4.6.1.1. No login needed.
  16. February 2023MinorCross-site scriptingFixed in 4.3.0. Needs a login on the site (Contributor+).
  17. February 2023MinorCross-site scriptingFixed in 4.3.0. Needs a login on the site (Administrator+).
  18. September 2022MinorForged requestsFixed in 4.2.4. No login needed.
  19. December 2021MajorMissing checksFixed in 4.1.5.3. Needs a login on the site.
  20. December 2021MinorDatabase injectionFixed in 4.1.5.3. Needs a login on the site.
  21. May 2021MajorRunning codeFixed in 4.1.0.2. Needs a login on the site.
  22. July 2020MinorCross-site scriptingFixed in 3.6.2. Needs a login on the site.
  23. October 2019MinorCross-site scriptingFixed in 3.2.7. Needs a login on the site.
  24. October 2018AdvisoryCross-site scriptingFixed in 2.10.
  25. July 2016AdvisoryA security flawFixed in 2.3.7.
  26. July 2016AdvisoryA security flawFixed in 2.3.8.
  27. July 2016AdvisoryCross-site scriptingFixed in 2.3.8. No login needed.
  28. July 2016AdvisoryA security flawFixed in 2.3.6.2.
  29. July 2016AdvisoryCross-site scriptingFixed in 2.3.7.
  30. September 2015AdvisoryA security flawFixed in 2.2.6.2.
  31. May 2015AdvisoryCross-site scriptingFixed in 2.1.6.
  32. May 2015AdvisoryMissing checksFixed in 2.1.6.
  33. April 2015AdvisoryCross-site scriptingFixed in 2.2.6.2.
  34. January 2015AdvisoryInformation leakFixed in 2.2.6.
  35. August 2014MinorCross-site scriptingFixed in 2.0.3.1. No login needed.
  36. May 2014AdvisoryMissing checksFixed in 2.2.5.
  37. May 2014AdvisoryCross-site scriptingFixed in 2.1.6.
  38. May 2014AdvisoryMissing checksFixed in 2.1.6.
  39. Date not knownAdvisoryCross-site scriptingFixed in 2.10.
  40. Date not knownAdvisoryCross-site scriptingFixed in 2.3.8. No login needed.
  41. Date not knownAdvisoryA security flawFixed in 2.3.7. No login needed.
  42. Date not knownAdvisoryA security flawFixed in 2.2.6.2.
  43. Date not knownAdvisoryCross-site scriptingFixed in 2.1.6.
  44. Date not knownAdvisoryMissing checksFixed in 2.1.6.

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

Be told the day a new one is found.

Mendbird checks your site every morning against the lists of known flaws, and emails you in plain English the day one hits something you run. Free for 14 days, then £9 a month.

Start my free trial