# CVE-2026-5200: Missing authorization in AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress

> Authenticated subscribers can escalate privileges to administrator by modifying plugin configuration and exporting keys due to missing authorization checks.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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 May 2026
- **Updated:** 20 May 2026
- **Also known as:** GHSA-54rj-qx28-9gcj

## What is CVE-2026-5200?

CVE-2026-5200 is a high-severity missing authorization vulnerability in acyba AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress, published on 20 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 10.8.2. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to modify privileged AcyMailing configuration, export subscriber secret keys, and chain these actions into administrator account takeover when a target administrator email address is known.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-5200?


## How do I fix CVE-2026-5200?

No fix has been published for CVE-2026-5200 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-5200 being exploited?

There is no known exploitation of CVE-2026-5200 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-5200 and fix it if it is affected.

What it is: CVE-2026-5200 is a high-severity missing authorization vulnerability in acyba AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress, published on 20 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-5200 in the wild and no public exploit code.

Affected product: acyba AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress. 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-2026-5200/ (Markdown: https://insights.sbomify.com/CVE-2026-5200/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-5200
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5200
- OSV: https://osv.dev/vulnerability/CVE-2026-5200

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-5200/
Summaries are generated and may contain mistakes; the official description above is the record.