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GDPR Cookie Compliance

12known security flaws found in GDPR Cookie Compliance
since December 2019

Safe from 5.1.0

Version 5.1.0 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: a security flaw, December 2019Minor: Missing checks, December 2019Minor: Forged requests, August 2023Minor: Cross-site scripting, February 2025Advisory: Cross-site scripting, February 2025Minor: Cross-site scripting, February 2025Minor: Cross-site scripting, February 2025Minor: Cross-site scripting, February 2025Advisory: Cross-site scripting, February 2025Advisory: Cross-site scripting, February 2025Minor: Forged requests, July 202620192020202120222023202420252026

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
  • Forged requests

    Someone could get a signed in administrator to change something without knowing, such as adding a new admin or changing settings, just by visiting a page.

    How: The software does not check that a change came from its own pages, so another site can quietly send one through the administrator's browser.

    Read about it here
  • 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
Every known flaw, newest first (12)
  1. July 2026MinorForged requestsFixed in 5.1.0. No login needed.
  2. February 2025MinorCross-site scriptingFixed in 4.15.7. Needs a login on the site (Admin+).
  3. February 2025AdvisoryCross-site scriptingFixed in 4.15.7. Needs a login on the site.
  4. February 2025MinorCross-site scriptingFixed in 4.15.7. Needs a login on the site.
  5. February 2025MinorCross-site scriptingFixed in 4.15.7. Needs a login on the site.
  6. February 2025MinorCross-site scriptingFixed in 4.15.7. Needs a login on the site.
  7. February 2025AdvisoryCross-site scriptingFixed in 4.15.9. Needs a login on the site.
  8. February 2025AdvisoryCross-site scriptingFixed in 4.15.9. Needs a login on the site.
  9. August 2023MinorForged requestsFixed in 4.12.5. No login needed.
  10. December 2019AdvisoryA security flawFixed in 4.0.3.
  11. December 2019MinorMissing checksFixed in 4.0.3. Needs a login on the site.
  12. Date not knownAdvisoryForged requestsFixed in 4.0.3.

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

Be told the day a new one is found.

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