# CVE-2026-11551: Auth bypass in Branda – White Label & Branding, Free Login Page Customizer

> Unauthenticated attackers can change arbitrary user passwords, including administrators, to gain unauthorized access and escalate privileges.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Jun 2026
- **Updated:** 23 Jun 2026
- **Also known as:** GHSA-r464-rgh8-qf85

## What is CVE-2026-11551?

CVE-2026-11551 is a critical authentication bypass vulnerability in wpmudev Branda – White Label & Branding, Free Login Page Customizer, published on 19 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Branda plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and including, 3.4.29. This is due to the plugin not properly validating a user's identity prior to updating their password. This makes it possible for unauthenticated attackers to change arbitrary user's passwords, including administrators, and leverage that to gain access to their account.

Weakness: CWE-640 (Weak Password Recovery Mechanism for Forgotten Password)

## Which versions are affected by CVE-2026-11551?


## How do I fix CVE-2026-11551?

No fix has been published for CVE-2026-11551 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-11551 being exploited?

There is no known exploitation of CVE-2026-11551 in the wild and no public exploit code.

Public exploit code:

- Unauthenticated Privilege Escalation via Account Takeover (github_poc): https://github.com/Polosss/By-Poloss..-..CVE-2026-11551-PoC
- CVE-2026-11551: Branda Plugin - Unauthenticated Privilege Escalation via Account Takeover (github_poc): https://github.com/xxconi/2026-11551
- https://github.com/ubaydev/CVE-2026-11551-PoC (github_poc): https://github.com/ubaydev/CVE-2026-11551-PoC

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-11551 and fix it if it is affected.

What it is: CVE-2026-11551 is a critical authentication bypass vulnerability in wpmudev Branda – White Label & Branding, Free Login Page Customizer, published on 19 Jun 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-2026-11551 in the wild and no public exploit code.

Affected product: wpmudev Branda – White Label & Branding, Free Login Page Customizer. 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-2026-11551/ (Markdown: https://insights.sbomify.com/CVE-2026-11551/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-11551
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-11551
- OSV: https://osv.dev/vulnerability/CVE-2026-11551

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-11551/
Summaries are generated and may contain mistakes; the official description above is the record.