# CVE-2026-55544: NextCRM has BOLA/IDOR in MCP Campaign Tools that Allows Cross-User Campaign Disclosure and Tampering

> Authenticated users can access and modify other users' campaigns due to missing authorization checks in MCP tools.

- **Severity:** High 7.6 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 20 Jul 2026
- **Updated:** 22 Jul 2026
- **Also known as:** GHSA-c9vg-c532-ppqx

## What is CVE-2026-55544?

CVE-2026-55544 is a high-severity missing authorization vulnerability in pdovhomilja nextcrm-app, published on 20 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

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.

Weakness: CWE-862 (Missing Authorization), CWE-639 (Authorization Bypass Through User-Controlled Key), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2026-55544?


## How do I fix CVE-2026-55544?

No fix has been published for CVE-2026-55544 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-55544 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55544 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-55544 and fix it if it is affected.

What it is: CVE-2026-55544 is a high-severity missing authorization vulnerability in pdovhomilja nextcrm-app, published on 20 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55544 exists.

Affected product: pdovhomilja nextcrm-app. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-55544/ (Markdown: https://insights.sbomify.com/CVE-2026-55544/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-55544
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-55544
- OSV: https://osv.dev/vulnerability/CVE-2026-55544

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-55544/
Summaries are generated and may contain mistakes; the official description above is the record.