What is the CVSS score of CVE-2020-37077?

CVE-2020-37077 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.1%.

Which versions of PHP are affected by CVE-2020-37077?

Organizations using Booked Scheduler 2.7.7 should be aware of notable risk from CVE-2020-37077, a path traversal vulnerability rated CVSS 6.5. This could allow unauthorized file access.

Is there a public PoC exploit available for CVE-2020-37077?

Yes, a public proof-of-concept exploit is available for CVE-2020-37077. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2020-37077?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Review file handling controls.

PHP CVE-2020-37077

MEDIUM

Path Traversal (CWE-22)

2026-02-03 disclosure@vulncheck.com

PHP Path Traversal

6.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 04, 2026 - 16:33 vuln.today

Public exploit code

CVE Published

Feb 03, 2026 - 22:16 nvd

MEDIUM 6.5

DescriptionCVE.org

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.

AnalysisAI

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. [CVSS 6.5 MEDIUM]

Technical ContextAI

Classified as CWE-22 (Path Traversal). Affects manage_email_templates.php script. 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 ProductsAI

Product: manage_email_templates.php script.

RemediationAI

Monitor vendor advisories for a patch. Validate and sanitize file path inputs. Use allowlists. Restrict network access to the affected service where possible.