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TI-2026-07957 Aliases CVE-2026-9055GHSA-9h4g-7958-x29w

Improper privilege management in melograno Booking for Appointments and Events Calendar…

Priority MEDIUM 49CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-269.

Summary

The Booking for Appointments and Events Calendar – Amelia (Premium) plugin for WordPress is vulnerable to Privilege Escalation in versions 8.0 - 9.6.2. This is due to insufficient validation of the attacker-controlled 'type' parameter in the customer update endpoint, which allows customers to set their role to 'manager' and trigger creation of a WordPress user with the wpamelia-manager role when the 'externalId' parameter is set to 0. This makes it possible for unauthenticated attackers to escalate their privileges to administrator by first elevating to the manager role, then creating a provider entity linked to an administrator user ID and overwriting that administrator's password.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00513 43rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
melogranoBooking for Appointments and Events Calendar – Amelia8.0 – 9.6.2—No fix listedCNA
  • Booking for Appointments and Events Calendar – Amelia Vendormelograno Affected 8.0 – 9.6.2 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-9055
  2. 2026-10-03 Alias added: GHSA-9h4g-7958-x29w

References

Other 2

  • TI-2026-81737 Arbitrary file upload in The Innovative Form Builder IvyForms plugin CVSS 3.1HIGH 8.8
  • TI-2026-05512 Cross-site scripting in melograno Booking for Appointments and Events Calendar – Amelia CVSS 3.1HIGH 7.2
  • TI-2026-86488 Missing authorization in Amelia plugin exposes event attendee data CVSS 3.1HIGH 7.5
  • TI-2026-83520 Sensitive data exposure in Amelia booking plugin for WordPress CVSS 3.1MEDIUM 5.3
  • TI-2026-13834 Booking for Appointments and Events Calendar - Amelia <= 2.4.5 - Missing Authorization to Unauthenticated Payment Bypass CVSS 3.1MEDIUM 5.3
  • TI-2026-86487 Missing authorization in Amelia plugin exposes booking records CVSS 3.1MEDIUM 6.5
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences