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Broken Link Checker

28known security flaws found in Broken Link Checker
since August 2014

Safe from 2.4.15

Version 2.4.15 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, August 2014Advisory: a security flaw, December 2014Minor: Cross-site scripting, December 2014Advisory: Cross-site scripting, April 2015Minor: Cross-site scripting, April 2015Minor: Cross-site scripting, June 2015Minor: Cross-site scripting, October 2019Minor: Cross-site scripting, October 2019Major: Running code, July 2022Minor: Cross-site scripting, November 2022Advisory: a security flaw, April 2023Advisory: Cross-site scripting, August 2023Advisory: Cross-site scripting, December 2023Minor: Cross-site scripting, February 2024Major: Cross-site scripting, September 2024Minor: Server side request forgery, December 2024Minor: Missing checks, June 2025Major: Database injection, March 2026Advisory: Running code, August 2026Minor: Server side request forgery, September 2026Major: Cross-site scripting, September 2026Minor: Running code, September 2026Minor: Running code, 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 (28)
  1. October 2026MinorRunning codeFixed in 2.4.15. No login needed.
  2. September 2026MajorCross-site scriptingFixed in 2.4.13.1. No login needed.
  3. September 2026MinorRunning codeFixed in 2.4.15. No login needed.
  4. September 2026MinorServer side request forgeryFixed in 2.4.14.1. Needs a login on the site (Editor+).
  5. August 2026AdvisoryRunning codeFixed in 2.4.12. No login needed.
  6. March 2026MajorDatabase injectionFixed in 2.4.8. Needs a login on the site (Editor+).
  7. June 2025MinorMissing checksFixed in 2.4.5. Needs a login on the site (Subscriber+).
  8. December 2024MinorServer side request forgeryFixed in 2.4.2. Needs a login on the site.
  9. September 2024MajorCross-site scriptingFixed in 2.4.1. No login needed.
  10. February 2024MinorCross-site scriptingFixed in 2.2.4. Needs a login on the site (Administrator+).
  11. December 2023AdvisoryCross-site scriptingFixed in 1.10.2.
  12. August 2023AdvisoryCross-site scriptingFixed in 1.9.2.
  13. April 2023AdvisoryA security flawFixed in 1.10.6.
  14. November 2022MinorCross-site scriptingFixed in 1.11.20. Needs a login on the site (Administrator+).
  15. July 2022MajorRunning codeFixed in 1.11.17. Needs a login on the site.
  16. October 2019MinorCross-site scriptingFixed in 1.11.9. No login needed.
  17. October 2019MinorCross-site scriptingFixed in 1.11.9. Needs a login on the site.
  18. June 2015MinorCross-site scriptingFixed in 1.10.9. No login needed.
  19. April 2015AdvisoryCross-site scriptingFixed in 1.10.6.
  20. April 2015MinorCross-site scriptingFixed in 1.10.6. No login needed.
  21. December 2014MinorCross-site scriptingFixed in 1.10.2. No login needed.
  22. December 2014AdvisoryA security flawFixed in 1.10.2.
  23. August 2014AdvisoryCross-site scriptingFixed in 1.9.2.
  24. Date not knownAdvisoryCross-site scriptingFixed in 1.10.6.
  25. Date not knownAdvisoryCross-site scriptingFixed in 1.10.3.
  26. Date not knownAdvisoryA security flawFixed in 1.10.2.
  27. Date not knownAdvisoryA security flawFixed in 1.9.2.
  28. Date not knownAdvisoryA security flawFixed in 1.9.2.

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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