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CVE-2026-110383— WordPress Electronic Signature Add-on for Fluent Forms plugin <= 2.0.5 - Insecure Direct Object References (IDOR) vulnerability

Quick assessment

Affected
WP E-Signature Electronic Signature Add-on for Fluent Forms
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Fluent Forms 的电子签名插件"WP E-Signature"（签名-fluent-contract-forms-add-on）存在“通过用户可控密钥绕过授权”的漏洞，该漏洞源于访问控制安全级别配置不当，可被攻击者利用。此问题影响该电子签名插件从未知版本至 2.0.5 版本的所有版本。

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1551.003
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I. Basic Information for CVE-2026-110383

Vulnerability Information
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Vulnerability Title
WordPress Electronic Signature Add-on for Fluent Forms plugin <= 2.0.5 - Insecure Direct Object References (IDOR) vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
WP E-Signature Electronic Signature Add-on for Fluent Forms 0 ~ 2.0.5 -

II. Public POCs for CVE-2026-110383

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III. Intelligence Information for CVE-2026-110383

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Vendor Pages for CVE-2026-110383 (1)

IV. Related Vulnerabilities

Same vendor: WP E-Signature
Same weakness: CWE-639

V. Comments for CVE-2026-110383

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