CVE-2026-5396HIGH 8.2EPSS p12.1%

CVE-2026-5396CVE-2026-5396

Description

The Fluent Forms plugin for WordPress is vulnerable to Authorization Bypass Through User-Controlled Key in all versions up to, and including, 6.1.21. This is due to the SubmissionPolicy class authorizing submission-level actions (read, modify, delete, add notes) based on a user-supplied `form_id` query parameter. This makes it possible for authenticated attackers, with Fluent Forms Manager access restricted to specific forms, to read, modify status, add notes to, and permanently delete form submissions belonging to any other form by spoofing the form_id parameter to a form they are authorized for.

Scoring

CVSS 3.18.2 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
EPSS0.22% probability of exploitation · percentile 12.1% · 2026-06-19T12:03:05Z
Published2026-05-14
Last modified2026-05-14

Underlying weaknesses· 1

CWE-639

References

  1. https://plugins.trac.wordpress.org/changeset?old_path=/fluentform/tags/6.1.21/app/Http/Policies/SubmissionPolicy.php&new_path=/fluentform/tags/6.2.0/app/Http/Policies/SubmissionPolicy.php
  2. https://www.wordfence.com/threat-intel/vulnerabilities/id/81aad41e-0330-4dff-a5f8-08a108d724f5?source=cve

1

TypeTargetConfidenceTier
WeaknessAuthorization Bypass Through User-Controlled Keycwe-6390%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
CVE-2026-5395
CVE
CVE-2026-8382
CVE
CVE-2026-6512
CVE
CVE-2026-5229
CVE
CVE-2026-9185
CVE
CVE-2026-3584
Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.