Security readout for executives and security teams
Plain-English summary
Booked Scheduler 2.7.7 has a flaw that can let a logged-in administrator read files outside the intended email-template area. This is not described as remote unauthenticated compromise, but it can expose sensitive server-side files if an administrator account is misused or compromised.
Executive priority
Treat as a targeted confidentiality risk, not an emergency mass-exploitation issue based on current evidence. Prioritize if Booked Scheduler 2.7.7 is internet-facing, manages sensitive data, or has many administrators.
Technical view
CVE-2020-37077 is a CWE-22 directory traversal issue in manage_email_templates.php. The vulnerable tn parameter can be manipulated by authenticated administrators to access files outside the intended directory. The supplied CVSS 4.0 score is 6.9, driven by high confidentiality impact and high privileges required.
Likely exposure
Exposure is likely limited to organizations running Twinkle Toes Software Booked Scheduler version 2.7.7, especially where administrative access is broadly assigned or weakly protected. The sources do not identify other affected versions.
Exploitation context
A public ExploitDB reference exists, but the source bundle does not show CISA KEV listing or confirmed active exploitation. Exploitation requires authenticated administrator privileges, reducing broad internet risk but increasing concern after account compromise.
Researcher notes
The key constraint is privilege requirement: PR:H. Validation should focus on version confirmation, administrative exposure, and evidence of traversal-style access attempts. The sources do not provide an official patch statement in the bundle.
Mitigation direction
- Identify and prioritize any Booked Scheduler 2.7.7 deployments.
- Check Booked Scheduler vendor guidance for fixed versions or official remediation.
- Restrict administrator access to trusted users only.
- Review and remove unnecessary administrator accounts.
- Place administrative access behind appropriate network or identity controls.
- Monitor for suspicious access to manage_email_templates.php.
Validation and detection
- Inventory Booked Scheduler instances and confirm deployed versions.
- Verify whether any instance is version 2.7.7.
- Review administrator account assignments and recent privilege changes.
- Inspect logs for manage_email_templates.php requests with unusual tn parameter values.
- Confirm vendor guidance or upgrade path before making production changes.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-37077 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.9 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
6.9MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-48428CVE reference · exploit
- Booked Scheduler Official WebsiteCVE reference · product
- Archived Booked Scheduler SourceForge PageCVE reference · product
- VulnCheck Advisory: Booked Scheduler 2.7.7 - Authenticated Directory TraversalCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.