What’s Vulnerable › Vulnerabilities

CVE-2020-37077: Booked Scheduler 2.7.7 - Authenticated Directory Traversal

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-03 · updated 2026-06-17
• Weakness: CWE-22

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.

Affected products

• Twinkle Toes Software Booked Scheduler: 2.7.7

References

• https://web.archive.org/web/20190612055926/https://sourceforge.net/projects/phpscheduleit/
• https://www.bookedscheduler.com
• https://www.exploit-db.com/exploits/48428
• https://www.vulncheck.com/advisories/booked-scheduler-authenticated-directory-traversal

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