CVE-2026-55544

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.

CVSS v3 7.6 HIGH

7.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/pdovhomilja/nextcrm-app/security/advisories/GHSA-c9vg-c532-ppqx
https://github.com/pdovhomilja/nextcrm-app/security/advisories/GHSA-c9vg-c532-ppqx

Configurations

No configuration.

History

22 Jul 2026, 14:17

Type	Values Removed	Values Added
References	~~() https://github.com/pdovhomilja/nextcrm-app/security/advisories/GHSA-c9vg-c532-ppqx -~~	() https://github.com/pdovhomilja/nextcrm-app/security/advisories/GHSA-c9vg-c532-ppqx -

20 Jul 2026, 22:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-20 22:17

Updated : 2026-07-22 14:17

NVD link : CVE-2026-55544

Mitre link : CVE-2026-55544

CVE.ORG link : CVE-2026-55544

JSON object : View

Products Affected

No product.

CWE

CWE-284

Improper Access Control

CWE-639

Authorization Bypass Through User-Controlled Key

CWE-862

Missing Authorization

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