CVE-2020-37077 Booked Scheduler 2.7.7 - Authenticated Directory Traversal
Authenticated administrators can exploit a directory traversal flaw in Booked Scheduler to read unauthorized files outside the intended directory.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-37077?
CVE-2020-37077 is a medium-severity path traversal vulnerability in Twinkle Toes Software Booked Scheduler, published on 3 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Booked Scheduler 2.7.7 contains a directory traversal vulnerability in the manage_email_templates.php script that allows authenticated administrators to access unauthorized files. Attackers can exploit the vulnerable 'tn' parameter to read files outside the intended directory by manipulating directory path traversal techniques.
Weakness: CWE-22
Which versions are affected by CVE-2020-37077?
How do I fix CVE-2020-37077?
No fix has been published for CVE-2020-37077 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2020-37077 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37077 exists.
Sources
Also known as GHSA-pw32-4hxv-cxrf.