# CVE-2026-15000: Cross-site scripting in Connect Contact Form 7 and Mailchimp

> Unauthenticated attackers can inject scripts via Mailchimp fields that execute when administrators view contact entries, potentially leading to privilege escalation.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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:** Not needed
- **Fix available:** No
- **Published:** 9 Jul 2026
- **Updated:** 9 Jul 2026
- **Also known as:** GHSA-6h77-cm5j-f2x9

## What is CVE-2026-15000?

CVE-2026-15000 is a high-severity cross-site scripting vulnerability in rnzo Connect Contact Form 7 and Mailchimp, published on 9 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Connect Contact Form 7 and Mailchimp plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Mailchimp Merge Field Values in all versions up to, and including, 0.9.78.06 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The injected payload is only triggered when a privileged user (Administrator) performs a Contact Lookup for the email address submitted via the CF7 form, meaning execution is deferred until an administrator interacts with the affected entry.

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

## Which versions are affected by CVE-2026-15000?


## How do I fix CVE-2026-15000?

No fix has been published for CVE-2026-15000 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-15000 being exploited?

There is no known exploitation of CVE-2026-15000 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-15000 and fix it if it is affected.

What it is: CVE-2026-15000 is a high-severity cross-site scripting vulnerability in rnzo Connect Contact Form 7 and Mailchimp, published on 9 Jul 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-2026-15000 in the wild and no public exploit code.

Affected product: rnzo Connect Contact Form 7 and Mailchimp. 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-2026-15000/ (Markdown: https://insights.sbomify.com/CVE-2026-15000/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-15000
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15000
- OSV: https://osv.dev/vulnerability/CVE-2026-15000

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-15000/
Summaries are generated and may contain mistakes; the official description above is the record.