# CVE-2018-0590: Missing authorization in Ultimate Member

> Authenticated attackers can bypass access restrictions to modify other users' profiles in the Ultimate Member WordPress plugin.

- **Severity:** Medium 4.3 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N`)
- **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:** 14 May 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-36j5-qc55-8r3p

## What is CVE-2018-0590?

CVE-2018-0590 is a medium-severity missing authorization vulnerability in Ultimate Member, published on 14 May 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Ultimate Member plugin prior to version 2.0.4 for WordPress allows remote authenticated attackers to bypass access restriction to modify the other users profiles via unspecified vectors.

## Which versions are affected by CVE-2018-0590?

It affects 1 product.


Products: Ultimatemember User Profile \& Membership.

## How do I fix CVE-2018-0590?

No fix has been published for CVE-2018-0590 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0590 being exploited?

There is no known exploitation of CVE-2018-0590 in the wild and no public exploit code.

## Other vulnerabilities in Ultimate Member

- [CVE-2018-10233](https://insights.sbomify.com/CVE-2018-10233/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2018-0588](https://insights.sbomify.com/CVE-2018-0588/): Path traversal in Ultimate Member (high 7.5)
- [CVE-2018-10234](https://insights.sbomify.com/CVE-2018-10234/): Cross-site scripting in n/a (medium 4.8)
- [CVE-2018-0586](https://insights.sbomify.com/CVE-2018-0586/): Path traversal in Ultimate Member (medium 4.3)
- [CVE-2018-0587](https://insights.sbomify.com/CVE-2018-0587/): File upload in Ultimate Member (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0590 and fix it if it is affected.

What it is: CVE-2018-0590 is a medium-severity missing authorization vulnerability in Ultimate Member, published on 14 May 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-0590 in the wild and no public exploit code.

Affected product: Ultimate Member. 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-2018-0590/ (Markdown: https://insights.sbomify.com/CVE-2018-0590/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0590
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0590
- OSV: https://osv.dev/vulnerability/CVE-2018-0590

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-0590/
Summaries are generated and may contain mistakes; the official description above is the record.