# CVE-2026-76780: BeyondSEO <= 1.3.6 - Missing Authorization to Authenticated (Contributor+) Limited Privilege Escalation


- **Severity:** Medium 6.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 28 Oct 2026
- **Updated:** 29 Oct 2026
- **Also known as:** GHSA-8q7r-cf36-8v8v

## What is CVE-2026-76780?

CVE-2026-76780 is a medium-severity vulnerability in rankingcoach BeyondSEO – AI SEO to Improve Rankings, Listings & Online Visibility, published on 28 Oct 2026. 

### Official description

The Beyondseo plugin for WordPress is vulnerable to unauthorized access in versions up to, and including, 1.3.6. This is due to the plugin permanently granting the 'rankingcoach_write_redirectManager' (and sibling rankingcoach_write_* module capabilities) to the Contributor role via BaseModule::defineCapabilities(), whose default role list includes 'contributor', combined with the module's REST endpoints (registered through BaseSubmoduleApi::registerRouteCreate/registerRouteEdit/registerRouteDelete) authorizing state-changing requests solely through checkPermissionsPost(), which only calls current_user_can('rankingcoach_write_<module>') and performs no admin capability, ownership, or additional nonce check inside the callback. This makes it possible for authenticated attackers, with Contributor-level access and above, to elevate their privileges to effectively that of an Administrator with respect to site-wide redirect management — creating, updating, or deleting 301/302 redirects that RedirectManagerHooks::handleRedirects() executes for every frontend visitor on template_redirect, allowing hijacking of arbitrary paths (including /checkout, /wp-login.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2026-76780?


## How do I fix CVE-2026-76780?

No fix has been published for CVE-2026-76780 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-76780 being exploited?

There is no known exploitation of CVE-2026-76780 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-76780 and fix it if it is affected.

What it is: CVE-2026-76780 is a medium-severity vulnerability in rankingcoach BeyondSEO – AI SEO to Improve Rankings, Listings & Online Visibility, published on 28 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-76780 in the wild and no public exploit code.

Affected product: rankingcoach BeyondSEO – AI SEO to Improve Rankings, Listings & Online Visibility. 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-2026-76780/ (Markdown: https://insights.sbomify.com/CVE-2026-76780/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-76780
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-76780
- OSV: https://osv.dev/vulnerability/CVE-2026-76780

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-76780/
Summaries are generated and may contain mistakes; the official description above is the record.