CVE-2026-47130: NextCRM Auth Bypass Vulnerability

CVE-2026-47130 Overview

CVE-2026-47130 is a Broken Object Level Authorization (BOLA/IDOR) vulnerability in NextCRM, an open-source customer relationship management platform. The flaw exists in the CRM contact and target update endpoints. The application fails to verify whether the authenticated user owns the resource being modified. Any authenticated user, including accounts with a standard member role, can arbitrarily modify CRM contacts and targets belonging to other users or organizations. This enables cross-tenant data tampering across the application. Version 0.12.0 remediates the issue. The vulnerability is tracked under [CWE-639: Authorization Bypass Through User-Controlled Key].

Critical Impact
Any authenticated user can modify sensitive CRM contacts and targets belonging to other tenants, resulting in cross-tenant data integrity loss.

Affected Products

NextCRM versions prior to 0.12.0
NextCRM contact update endpoint
NextCRM target update endpoint

Discovery Timeline

2026-07-20 - CVE-2026-47130 published to NVD
2026-07-22 - Last updated in NVD database

Technical Details for CVE-2026-47130

Vulnerability Analysis

The vulnerability stems from missing object-level authorization checks in the NextCRM API. When an authenticated user submits an update request against a contact or target resource, the application processes the modification based on the supplied object identifier without validating ownership. The server trusts that the authenticated session implies authorization for the referenced resource.

This is a textbook Insecure Direct Object Reference (IDOR) pattern. The identifier acts as a user-controlled key, and access decisions rely on authentication alone rather than resource-level policy. Standard member accounts inherit the same modification capability as privileged users for resources they do not own.

The impact is limited to integrity of contact and target records. Confidentiality and availability are less directly affected, but manipulated CRM data can corrupt pipeline forecasts, redirect communications, or seed downstream fraud.

Root Cause

The root cause is missing ownership verification in the update handlers for contact and target objects. The application resolves the target record from the request payload and applies mutations without joining the query against the caller's organization or user identity.

Attack Vector

Exploitation requires an authenticated NextCRM account with any role, including member. The attacker enumerates or guesses object identifiers for contacts and targets belonging to other tenants. The attacker then issues update requests to the vulnerable endpoints, substituting the target identifier. The server processes the modification and persists attacker-supplied values.

No verified public exploit code is available. Refer to the GitHub Security Advisory GHSA-mg5f-m89f-4gmc for coordinated disclosure details.

Detection Methods for CVE-2026-47130

Indicators of Compromise

Unexpected modifications to CRM contact or target records with no matching activity in user audit logs for the record owner.
API requests to contact or target update endpoints originating from user accounts that do not own the referenced resource.
Sequential or enumerated object identifiers appearing across update requests from a single session.

Detection Strategies

Correlate the authenticated user identifier on each update request with the owner or organization identifier of the modified resource. Flag mismatches.
Alert on member role accounts issuing high volumes of update requests against contact or target endpoints.
Review database change logs for record updates where the modifying user is outside the owning organization.

Monitoring Recommendations

Enable application-level audit logging for all mutations on contact and target objects, capturing actor, resource owner, and payload diff.
Forward NextCRM API access logs to a centralized log platform and build queries that join request actor against resource ownership.
Monitor for spikes in HTTP PATCH or PUT requests to contact and target endpoints outside of normal business patterns.

How to Mitigate CVE-2026-47130

Immediate Actions Required

Upgrade NextCRM to version 0.12.0 or later, which enforces object-level authorization on contact and target updates.
Audit contact and target records for unauthorized modifications since deployment of vulnerable versions.
Rotate API tokens and review active sessions for accounts with member role after patching.

Patch Information

NextCRM version 0.12.0 fixes the vulnerability by adding ownership verification to the affected update endpoints. Details are published in the GitHub Security Advisory GHSA-mg5f-m89f-4gmc.

Workarounds

No official workaround is documented. Upgrading to version 0.12.0 is the recommended remediation.
If immediate upgrade is not possible, restrict access to the NextCRM instance to trusted users only and place the application behind an authenticated reverse proxy that logs every mutation request.
Temporarily disable self-service member account provisioning and require administrator approval for new accounts.

bash

# Upgrade NextCRM to the patched release
git fetch --tags
git checkout v0.12.0
npm install
npm run build
npm run start