# CVE-2026-3646: LTL Freight Quotes – R+L Carriers Edition <= 3.3.13 - Missing Authorization to Unauthenticated Settings Update

> Unauthenticated attackers can modify plugin settings, downgrading paid plans and disabling premium features due to missing authorization checks.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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:** 8 Apr 2026
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-5cr3-m7xx-pv5v

## What is CVE-2026-3646?

CVE-2026-3646 is a medium-severity missing authorization vulnerability in enituretechnology LTL Freight Quotes – R+L Carriers Edition, published on 8 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The LTL Freight Quotes – R+L Carriers Edition plugin for WordPress is vulnerable to Missing Authorization via the plugin's webhook handler in all versions up to, and including, 3.3.13. This is due to missing authentication, authorization, and nonce verification on a standalone PHP file that directly processes GET parameters and updates WordPress options. This makes it possible for unauthenticated attackers to modify the plugin's subscription plan settings, effectively downgrading the store from a paid plan to the Trial Plan, changing the store type, and manipulating subscription expiration dates, potentially disabling premium features such as Dropship and Hazardous Material handling.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-3646?


## How do I fix CVE-2026-3646?

No fix has been published for CVE-2026-3646 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-3646 being exploited?

There is no known exploitation of CVE-2026-3646 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-3646 and fix it if it is affected.

What it is: CVE-2026-3646 is a medium-severity missing authorization vulnerability in enituretechnology LTL Freight Quotes – R+L Carriers Edition, published on 8 Apr 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-2026-3646 in the wild and no public exploit code.

Affected product: enituretechnology LTL Freight Quotes – R+L Carriers Edition. 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-2026-3646/ (Markdown: https://insights.sbomify.com/CVE-2026-3646/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-3646
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-3646
- OSV: https://osv.dev/vulnerability/CVE-2026-3646

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-3646/
Summaries are generated and may contain mistakes; the official description above is the record.