# CVE-2026-84734: Mindstien Quick Login <= 1.0 - Unauthenticated Administrator Account Takeover via 'mql_pass' Parameter

> Unauthenticated attackers can bypass authentication to gain administrator access via the mql_pass parameter in the Mindstien Quick Login plugin.

- **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:** 11 Oct 2026
- **Updated:** 11 Oct 2026
- **Also known as:** GHSA-78rw-wp89-q5cq

## What is CVE-2026-84734?

CVE-2026-84734 is a critical authentication bypass vulnerability in Unknown Mindstien Quick Login, published on 11 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Mindstien Quick Login WordPress plugin through 1.0 does not correctly validate a value supplied in the request against the visitor's own session before authenticating them, allowing unauthenticated attackers to obtain a session as the administrator account the Mindstien Quick Login WordPress plugin through 1.0 is configured with.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-84734?


## How do I fix CVE-2026-84734?

No fix has been published for CVE-2026-84734 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-84734 being exploited?

There is no known exploitation of CVE-2026-84734 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-84734 and fix it if it is affected.

What it is: CVE-2026-84734 is a critical authentication bypass vulnerability in Unknown Mindstien Quick Login, published on 11 Oct 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-2026-84734 in the wild and no public exploit code.

Affected product: Unknown Mindstien Quick Login. 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-2026-84734/ (Markdown: https://insights.sbomify.com/CVE-2026-84734/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-84734
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-84734
- OSV: https://osv.dev/vulnerability/CVE-2026-84734

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-84734/
Summaries are generated and may contain mistakes; the official description above is the record.