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CVE-2026-17567: CWE-639 Authorization Bypass Through User-Controlled Key in wpmanageninja Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder

0
Medium
VulnerabilityCVE-2026-17567cvecve-2026-17567cwe-639
Published: 07/31/2026 (07/31/2026, 09:32:01 UTC)
Source: CVE Database V5
Vendor/Project: wpmanageninja
Product: Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder

Description

The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 6.2.8 via the 'transaction' parameter due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to brute-force valid transaction hashes and view sensitive payment receipt data including customer name, email address, billing address, order items, payment method, and payment status belonging to other users. Because submission ID, form ID, and transaction creation time are either observable or guessable by an attacker, the effective brute-force space is bounded to approximately 900 candidates per second per (submission, form) pair, making exploitation practical without any prior authentication or account.

CVSS v3.1

Score 5.3medium

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Technical Details

Data Version
5.2
Assigner Short Name
Wordfence
Date Reserved
2026-07-27T14:45:05.088Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null

Threat ID: 6a6c777c9c2644c7f8ab1ba3

Added to database: 07/31/2026, 10:22:52 UTC

Last updated: 07/31/2026, 11:24:15 UTC

Views: 7

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