# CVE-2026-95816: Smart Forms <= 2.6.104 - Unauthenticated Stored Cross-Site Scripting via 'formString' Parameter

> Unauthenticated attackers can inject arbitrary scripts via the formString parameter in Smart Forms, leading to stored XSS and potential account takeover.

- **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:** 14 Oct 2026
- **Updated:** 15 Oct 2026
- **Also known as:** GHSA-wvww-4x5h-8gg3

## What is CVE-2026-95816?

CVE-2026-95816 is a high-severity cross-site scripting vulnerability in edgarrojas Smart Forms – when you need more than just a contact form, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Smart Forms – when you need more than just a contact form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'formString' parameter in all versions up to, and including, 2.6.104 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 nonce check protecting the rednao_smart_forms_save_form_values AJAX handler is only enforced when the smart_forms_block_anonymous_submissions option is enabled, meaning default installations require no authentication or nonce verification whatsoever to submit and store malicious payloads.

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

## Which versions are affected by CVE-2026-95816?


## How do I fix CVE-2026-95816?

No fix has been published for CVE-2026-95816 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-95816 being exploited?

There is no known exploitation of CVE-2026-95816 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-95816 and fix it if it is affected.

What it is: CVE-2026-95816 is a high-severity cross-site scripting vulnerability in edgarrojas Smart Forms – when you need more than just a contact form, published on 14 Oct 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-2026-95816 in the wild and no public exploit code.

Affected product: edgarrojas Smart Forms – when you need more than just a contact form. 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-2026-95816/ (Markdown: https://insights.sbomify.com/CVE-2026-95816/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-95816
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-95816
- OSV: https://osv.dev/vulnerability/CVE-2026-95816

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-95816/
Summaries are generated and may contain mistakes; the official description above is the record.