# CVE-2026-76548: Profile Builder < 4.0.1 - Unauthenticated Unpublished Content and Media Modification via Front-End Upload Auth Bypass

> Unauthenticated attackers can bypass upload restrictions to modify unpublished content and view media libraries in the User Profile Builder plugin.

- **Severity:** High 8.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Aug 2026
- **Updated:** 30 Aug 2026
- **Also known as:** GHSA-mpcm-vcpj-wm9p

## What is CVE-2026-76548?

CVE-2026-76548 is a high-severity authentication bypass vulnerability in Unknown User Profile Builder, published on 29 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The User Profile Builder  WordPress plugin before 4.0.1 does not properly restrict its front-end file upload feature, granting unauthenticated visitors capabilities reserved to privileged roles. This allows them to list the site's media library and to modify unpublished posts, pages and media items belonging to other users.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-76548?


## How do I fix CVE-2026-76548?

No fix has been published for CVE-2026-76548 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-76548 being exploited?

There is no known exploitation of CVE-2026-76548 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-76548 and fix it if it is affected.

What it is: CVE-2026-76548 is a high-severity authentication bypass vulnerability in Unknown User Profile Builder, published on 29 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-76548 in the wild and no public exploit code.

Affected product: Unknown User Profile Builder. 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-2026-76548/ (Markdown: https://insights.sbomify.com/CVE-2026-76548/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-76548
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-76548
- OSV: https://osv.dev/vulnerability/CVE-2026-76548

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-76548/
Summaries are generated and may contain mistakes; the official description above is the record.