# CVE-2026-9720: Facturación Electrónica Costa Rica <= 2.0.2 - Cross-Site Request Forgery to Plugin Settings Update

> Unauthenticated attackers can modify plugin settings and tokens by tricking administrators into clicking a link.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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:** A user has to click or open something
- **Fix available:** No
- **Published:** 29 Jul 2026
- **Updated:** 29 Jul 2026
- **Also known as:** GHSA-6f8f-g768-8537

## What is CVE-2026-9720?

CVE-2026-9720 is a medium-severity vulnerability in facturadorvirtual Facturación Electrónica Costa Rica, published on 29 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

The Facturación Electrónica Costa Rica plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.0.2. This is due to missing or incorrect nonce validation on the (global scope, included by fvcr_admin_page_html) function. This makes it possible for unauthenticated attackers to modify the plugin's configuration, including API tokens, access tokens, economic activity, Hacienda environment mode, invoice and ticket emission flags, exchange rate, and branch settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2026-9720?


## How do I fix CVE-2026-9720?

No fix has been published for CVE-2026-9720 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-9720 being exploited?

There is no known exploitation of CVE-2026-9720 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-9720 and fix it if it is affected.

What it is: CVE-2026-9720 is a medium-severity vulnerability in facturadorvirtual Facturación Electrónica Costa Rica, published on 29 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-9720 in the wild and no public exploit code.

Affected product: facturadorvirtual Facturación Electrónica Costa Rica. 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-2026-9720/ (Markdown: https://insights.sbomify.com/CVE-2026-9720/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-9720
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-9720
- OSV: https://osv.dev/vulnerability/CVE-2026-9720

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-9720/
Summaries are generated and may contain mistakes; the official description above is the record.