CVE-2026-17567 Information disclosure in Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder
Unauthenticated attackers can brute-force transaction hashes to view sensitive payment receipt data belonging to other users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-17567?
CVE-2026-17567 is a medium-severity vulnerability in wpmanageninja Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder, published on 31 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-639
Which versions are affected by CVE-2026-17567?
How do I fix CVE-2026-17567?
No fix has been published for CVE-2026-17567 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-17567 being exploited?
There is no known exploitation of CVE-2026-17567 in the wild and no public exploit code.
Sources
Also known as GHSA-gx6f-fm4p-x72r.