CVE-2026-55544
HighCVSS 7.6Exploitation Probability (EPSS)
Low risk8th percentile - higher than 8% of all known CVEs
Summary
NextCRM version 0.12.1 has a vulnerability in MCP campaign tools where handlers ignore the authenticated user ID and operate on campaigns only by object ID. A low-privileged user with a valid MCP API token can enumerate, read, modify, or delete other users' campaigns.
Risk Assessment
Risk of unauthorized access to all campaigns in the system, including modification of templates and campaign stages, potentially leading to data confidentiality and integrity breaches.
Recommendation
Update NextCRM to version 0.12.2 or later.
Other vulnerabilities in NextCRM
See all- CVE-2026-55550High
A vulnerability in NextCRM (open source CRM) allows an authenticated low-privileged user to create, modify, archive, or soft-delete products in the CRM catalog via the MCP API.
- CVE-2026-47130High
BOLA/IDOR vulnerability in NextCRM (versions prior to 0.12.0) in CRM contact and target update endpoints. An authenticated user can modify data belonging to other users or organizations.
- CVE-2026-47129High
BAC vulnerability in NextCRM (versions before 0.12.0) allows any authenticated user (even with 'member' or 'viewer' role) to activate or deactivate any user account, including the admin. Missing admin role check in activateUser and deactivateUser actions.
Original NVD description (English source)
NextCRM is open-source customer relationship management (CRM) software. In version 0.12.1, the MCP campaign tools expose campaign read and write operations over the network using user-generated Bearer API tokens (`nxtc__...`). The application has an authorization model that restricts normal users to campaigns they created, but multiple MCP campaign handlers ignore the authenticated user ID and query or mutate campaigns only by object ID. As a result, a low-privileged authenticated user with a valid MCP API token can enumerate all campaigns, read campaign details, update or delete campaigns owned by other users, modify campaign templates and steps, and potentially trigger or pause campaign delivery. Version 0.12.2 fixes the issue.