# CVE-2026-3139: Missing authorization in User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor

> Authenticated subscribers can reassign ownership of arbitrary posts and attachments due to missing validation in the avatar field.

- **Severity:** Medium 4.3 (`CVSS:3.1/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:** 31 Mar 2026
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-g22g-h6v3-25jw

## What is CVE-2026-3139?

CVE-2026-3139 is a medium-severity missing authorization vulnerability in cozmoslabs User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor, published on 31 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 3.15.5 via the wppb_save_avatar_value() function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to reassign ownership of arbitrary posts and attachments by changing 'post_author'.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-3139?


## How do I fix CVE-2026-3139?

No fix has been published for CVE-2026-3139 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-3139 being exploited?

There is no known exploitation of CVE-2026-3139 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-3139 and fix it if it is affected.

What it is: CVE-2026-3139 is a medium-severity missing authorization vulnerability in cozmoslabs User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor, published on 31 Mar 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-2026-3139 in the wild and no public exploit code.

Affected product: cozmoslabs User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor. 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-2026-3139/ (Markdown: https://insights.sbomify.com/CVE-2026-3139/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-3139
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-3139
- OSV: https://osv.dev/vulnerability/CVE-2026-3139

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-3139/
Summaries are generated and may contain mistakes; the official description above is the record.