The plugin register. Used on 300,000+ sites
Simple History
8known security flaws found in Simple History
since August 2014
Safe from 5.27.0
Version 5.27.0 or later fixes all of them. A site on an older version is open to them.
Or let us look for you
When they were found.
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 - Information leak
It could give away information that should stay private, such as user details, file locations or settings, which makes other attacks easier.
How: The software shows, sends or logs more than it should.
Every known flaw, newest first (8)
- March 2026MinorInformation leakFixed in 5.24.1. No login needed.
- March 2026MajorMissing checksFixed in 5.27.0. Needs a login on the site (Subscriber+).
- June 2025MinorInformation leakFixed in 5.8.2. Needs a login on the site (Administrator+).
- February 2023AdvisoryA security flawFixed in 3.4.0. Needs a login on the site.
- July 2016AdvisoryInformation leakFixed in 2.7.5.
- May 2015AdvisoryA security flawFixed in 1.0.8.
- August 2014AdvisoryInformation leakFixed in 1.0.8.
- Date not knownAdvisoryA security flawFixed in 1.0.8.
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.