# CVE-2026-8790: Football Pool <= 2.13.4 - Authenticated (Subscriber+) Reflected Cross-Site Scripting

> Attackers can execute arbitrary scripts in the browsers of authenticated users via a reflected XSS vulnerability in the Football Pool WordPress plugin.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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:** 5 Aug 2026
- **Updated:** 5 Aug 2026
- **Also known as:** GHSA-jq74-qc6v-q6x5

## What is CVE-2026-8790?

CVE-2026-8790 is a medium-severity cross-site scripting vulnerability in antoineh Football Pool, published on 5 Aug 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 Football Pool plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the `shouttext` POST parameter of the Shoutbox widget in all versions up to, and including, 2.13.4 due to insufficient input sanitization and output escaping. When a shoutbox form submission fails the nonce check (or `shouttext` is empty, or the user is unable to save), the raw POST value is echoed back into a `<textarea>` element using `printf('%s', ...)` with no HTML escaping. This makes it possible for unauthenticated attackers to execute arbitrary web scripts in the browser of an authenticated victim (Subscriber-level or higher) who is tricked into submitting a crafted POST request to a page that contains the Shoutbox widget.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-8790?


## How do I fix CVE-2026-8790?

No fix has been published for CVE-2026-8790 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-8790 being exploited?

There is no known exploitation of CVE-2026-8790 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-8790 and fix it if it is affected.

What it is: CVE-2026-8790 is a medium-severity cross-site scripting vulnerability in antoineh Football Pool, published on 5 Aug 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-2026-8790 in the wild and no public exploit code.

Affected product: antoineh Football Pool. 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-2026-8790/ (Markdown: https://insights.sbomify.com/CVE-2026-8790/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-8790
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-8790
- OSV: https://osv.dev/vulnerability/CVE-2026-8790

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-8790/
Summaries are generated and may contain mistakes; the official description above is the record.