Fluent Forms <= 6.2.8 - Reflected Cross-Site Scripting via 'param'
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via 'param' in all versions up to, and including, 6.2.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| WP ManageNinja LLC | Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder | up to 6.2.8 | — | No fix listed | CNA |
- Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder VendorWP ManageNinja LLC Affected up to 6.2.8 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-17571
- 2026-10-03 Alias added: GHSA-pqrj-crjh-4764
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/547008fe-2585-4089-a710-71a83ae3d829?source=cve
- https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/app/Modules/Component/Component.php#L1456
- https://plugins.trac.wordpress.org/browser/fluentform/tags/6.2.8/app/Modules/Component/Component.php#L1452
- https://plugins.trac.wordpress.org/changeset?old_path=%2Ffluentform/tags/6.2.8&new_path=%2Ffluentform/tags/6.2.9
- https://plugins.trac.wordpress.org/changeset/3625751/fluentform/trunk/app/Modules/Component/Component.php
More WP ManageNinja LLC vulnerabilities
- TI-2021-13634 CSRF in WP Fluent Forms < 3.6.67 allows stored XSS and Privilege Escalation CVSS 3.1HIGH 8.8
- TI-2022-04342 FluentAuth < 1.0.2 - Bypass blocks by IP Spoofing CVSS 3.1HIGH 7.5
- TI-2024-11836 Ninja Tables < 5.0.17 - Admin+ Stored XSS CVSS 3.1MEDIUM 6.1
- TI-2023-00211 FluentSMTP < 2.2.3 - Stored XSS via Email Logs CVSS 3.1MEDIUM 5.4
- TI-2026-51633 Ninja Tables Pro 5.2.11 Embedded Malicious Code via Tampered Plugin Build CVSS 4.0CRITICAL 9.3
- TI-2026-51632 Fluent Forms Pro 6.2.7 Embedded Malicious Code via Tampered Plugin Build CVSS 4.0CRITICAL 9.3
Sources
- CVE-2026-17571 · CVE Program
- CVE-2026-17571 · NVD
- FIRST EPSS
- GHSA-pqrj-crjh-4764 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences