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The Events Calendar

54known security flaws found in The Events Calendar
since August 2014

Safe from 6.18.2

Version 6.18.2 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: a security flaw, August 2014Advisory: Open redirect, April 2016Advisory: Open redirect, April 2016Minor: Cross-site scripting, March 2019Advisory: Information leak, February 2022Advisory: Information leak, February 2022Minor: Missing checks, March 2022Advisory: Forged requests, February 2023Advisory: Information leak, February 2023Advisory: Open redirect, April 2023Major: Cross-site scripting, July 2023Minor: Missing checks, July 2023Advisory: Cross-site scripting, August 2023Major: Missing checks, November 2023Advisory: Information leak, November 2023Minor: Missing checks, January 2024Minor: Forged requests, April 2024Dangerous: Cross-site scripting, May 2024Minor: Missing checks, May 2024Minor: Forged requests, July 2024Minor: Cross-site scripting, July 2024Minor: Cross-site scripting, July 2024Dangerous: Database injection, September 2024Minor: Information leak, November 2024Minor: Forged requests, January 2025Minor: Cross-site scripting, January 2025Advisory: Missing checks, May 2025Minor: Cross-site scripting, June 2025Major: Database injection, September 2025Minor: Information leak, September 2025Minor: Missing checks, October 2025Minor: Information leak, November 2025Major: Database injection, November 2025Minor: Missing checks, January 2026Minor: Missing checks, January 2026Advisory: a security flaw, February 2026Advisory: Reading files, March 2026Dangerous: Database injection, June 2026Advisory: a security flaw, July 2026Dangerous: Running code, August 2026Advisory: Information leak, August 2026Dangerous: Running code, September 2026Dangerous: Running code, September 2026Advisory: Missing checks, September 2026Advisory: Information leak, September 2026Advisory: Missing checks, September 2026Minor: Missing checks, September 2026Dangerous: Running code, September 2026Minor: a security flaw, October 2026Minor: Cross-site scripting, October 20262014201620182020202220242026

DangerousMajorMinorAdvisory

What they could let someone do.

What could happen

  • 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
  • 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 (54)
  1. October 2026MinorA security flawFixed in 6.17.5.1. No login needed.
  2. October 2026MinorCross-site scriptingFixed in 6.18.2. Needs a login on the site (Contributor+).
  3. September 2026DangerousRunning codeFixed in 6.17.4.1. No login needed.
  4. September 2026AdvisoryMissing checksFixed in 6.17.5.
  5. September 2026AdvisoryInformation leakFixed in 6.17.5. No login needed.
  6. September 2026AdvisoryMissing checksFixed in 6.17.5.
  7. September 2026MinorMissing checksFixed in 6.17.5.1. Needs a login on the site.
  8. September 2026DangerousRunning codeFixed in 6.17.4.1. No login needed.
  9. September 2026DangerousRunning codeFixed in 6.17.3.1. No login needed.
  10. August 2026DangerousRunning codeFixed in 6.17.3. No login needed.
  11. August 2026AdvisoryInformation leakFixed in 6.17.3.1. Needs a login on the site (Contributor+).
  12. July 2026AdvisoryA security flawFixed in 6.16.5.1. No login needed.
  13. June 2026DangerousDatabase injectionFixed in 6.16.3. No login needed.
  14. March 2026AdvisoryReading filesFixed in 6.15.17.1. Needs a login on the site (Author+).
  15. February 2026AdvisoryA security flawFixed in 6.15.16.1. Needs a login on the site (Contributor+).
  16. January 2026MinorMissing checksFixed in 6.15.13.1. Needs a login on the site (Subscriber+).
  17. January 2026MinorMissing checksFixed in 6.15.13. Needs a login on the site.
  18. November 2025MinorInformation leakFixed in 6.15.10. No login needed.
  19. November 2025MajorDatabase injectionFixed in 6.15.10. No login needed.
  20. October 2025MinorMissing checksFixed in 6.15.10. Needs a login on the site (Subscriber+).
  21. September 2025MinorInformation leakFixed in 6.15.3. No login needed.
  22. September 2025MajorDatabase injectionFixed in 6.15.1.1. No login needed.
  23. June 2025MinorCross-site scriptingFixed in 6.13.2.1. Needs a login on the site (Contributor+).
  24. May 2025AdvisoryMissing checksFixed in 6.12.0.
  25. January 2025MinorCross-site scriptingFixed in 6.9.1. Needs a login on the site (Contributor+).
  26. January 2025MinorForged requestsFixed in 6.7.1. No login needed.
  27. November 2024MinorInformation leakFixed in 6.8.2.1. No login needed.
  28. September 2024DangerousDatabase injectionFixed in 6.6.4.1. No login needed.
  29. July 2024MinorCross-site scriptingFixed in 6.6.4. Needs a login on the site.
  30. July 2024MinorCross-site scriptingFixed in 6.6.4. No login needed.
  31. July 2024MinorForged requestsFixed in 6.5.1.5. No login needed.
  32. May 2024MinorMissing checksFixed in 6.4.0.1. Needs a login on the site (Contributor+).
  33. May 2024DangerousCross-site scriptingFixed in 6.4.0.1. No login needed.
  34. April 2024MinorForged requestsFixed in 6.3.1. No login needed.
  35. January 2024MinorMissing checksFixed in 6.2.9. No login needed.
  36. November 2023AdvisoryInformation leakFixed in 6.2.8.1.
  37. November 2023MajorMissing checksFixed in 6.2.8.1. No login needed.
  38. August 2023AdvisoryCross-site scriptingFixed in 3.0.1.
  39. July 2023MinorMissing checksFixed in 6.1.3. No login needed.
  40. July 2023MajorCross-site scriptingFixed in 6.1.0. No login needed.
  41. April 2023AdvisoryOpen redirectFixed in 4.1.1.1.
  42. February 2023AdvisoryForged requestsFixed in 5.14.0.4.
  43. February 2023AdvisoryInformation leakFixed in 5.14.0.4.
  44. March 2022MinorMissing checksFixed in 5.14.0.4. Needs a login on the site.
  45. February 2022AdvisoryInformation leakFixed in 5.14.0.4.
  46. February 2022AdvisoryInformation leakFixed in 5.14.0.4.
  47. March 2019MinorCross-site scriptingFixed in 4.8.2. No login needed.
  48. April 2016AdvisoryOpen redirectFixed in 4.1.1.1.
  49. April 2016AdvisoryOpen redirectFixed in 4.1.1.1.
  50. August 2014AdvisoryA security flawFixed in 3.0.1.
  51. Date not knownAdvisoryForged requestsFixed in 5.14.0.4.
  52. Date not knownAdvisoryA security flawFixed in 4.1.1.1.
  53. Date not knownAdvisoryCross-site scriptingFixed in 3.0.1.
  54. Date not knownAdvisoryCross-site scriptingFixed in 5.14.0.

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.

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