---
id: "CVE-2026-110383"
kind: "vulnerability"
aliases: ["CVE-2026-110383"]
title: "WP E-Signature Fluent Forms add-on: authorization bypass through user-controlled key"
severity: "high"
cvss: 7.5
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["e-signature", "fluent-forms", "package", "self-hosted", "wordpress"]
not_affected_if: ["plugin-not-installed"]
published_at: "2026-10-18T11:16:36+00:00"
first_seen_at: "2026-10-23T21:57:14+00:00"
updated_at: "2026-10-25T03:23:34+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-110383", "first_seen_at": "2026-10-23T21:57:14+00:00"}]
---

# WP E-Signature Fluent Forms add-on: authorization bypass through user-controlled key

The WP E-Signature Electronic Signature Add-on for Fluent Forms, a WordPress plugin, has an authorization bypass where a user-controlled key lets a request skip access checks. An attacker may be able to reach signature or contract data they should not see.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed version of the Electronic Signature Add-on for Fluent Forms (plugin slug `signature-fluent-contract-forms-add-on`) in the WordPress plugins screen or `wp plugin get signature-fluent-contract-forms-add-on --field=version`
- unknown for other checks: the sources do not say which endpoints or settings are involved

## Fix

- Update the Electronic Signature Add-on for Fluent Forms plugin to a version later than `2.0.5`, if the vendor has released one
- unknown: the sources do not name a fixed version

## Timeline

- 2026-10-23T21:57:14+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-110383

## From the sources

Authorization Bypass Through User-Controlled Key vulnerability in WP E-Signature Electronic Signature Add-on for Fluent Forms signature-fluent-contract-forms-add-on allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Electronic Signature Add-on for Fluent Forms: from n/a through 2.0.5.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_