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VulnerabilityPublished

CVE-2026-17567: Fluent Forms (WordPress plugin) · Insecure Direct Object Reference

Affects Fluent Forms (WordPress plugin)Source CVE Database V5

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Not known to be exploited · CVSS 5.3 Medium.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.6% chance of exploitation in 30 days – higher than 49% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 31 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
wpmanageninjaFluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form BuilderAffected
  • <=6.2.8
Fixed in–

AI-suggested

Until an official fix is available, restrict access to the affected plugin or disable it if possible. Monitor for updates from the vendor wpmanageninja regarding patches or mitigations addressing this vulnerability.

Description

The Fluent Forms WordPress plugin up to version 6.2.8 contains an authorization bypass vulnerability via the 'transaction' parameter. This flaw allows unauthenticated attackers to brute-force transaction hashes and access sensitive payment receipt data of other users, including personal and payment details. The vulnerability arises from missing validation on a user-controlled key, enabling insecure direct object reference attacks. The brute-force attack is practical due to a limited candidate space of about 900 possibilities per second per submission and form pair.

References

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