Fluent Support <= 2.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'redirect-to' Shortcode Attribute
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- 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 Support – Helpdesk & Customer Support Ticket System plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'redirect-to' Shortcode Attribute in all versions up to, and including, 2.3.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The XSS payload is in a hidden attribute so it only fires in specific browsers when specific access keys are used making exploitation unlikely.
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 Support – Helpdesk & Customer Support Ticket System | up to 2.3.0 | — | No fix listed | CNA |
- Fluent Support – Helpdesk & Customer Support Ticket System VendorWP ManageNinja LLC Affected up to 2.3.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-15665
- 2026-10-03 Alias added: GHSA-64jj-pfw2-rm5w
References
Other 6
- https://www.wordfence.com/threat-intel/vulnerabilities/id/0c963224-e680-4ca6-85ae-07cd0ee6c1d4?source=cve
- https://plugins.trac.wordpress.org/browser/fluent-support/tags/2.3.0/app/Hooks/Handlers/AuthHandler.php#L149
- https://plugins.trac.wordpress.org/browser/fluent-support/tags/2.3.0/app/Hooks/Handlers/AuthHandler.php#L201
- https://plugins.trac.wordpress.org/browser/fluent-support/tags/2.3.0/app/Hooks/Handlers/AuthHandler.php#L500
- https://plugins.trac.wordpress.org/browser/fluent-support/tags/2.3.0/app/Hooks/Handlers/AuthHandler.php#L111
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3609122%40fluent-support&new=3609122%40fluent-support
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-2026-15665 · CVE Program
- CVE-2026-15665 · NVD
- FIRST EPSS
- GHSA-64jj-pfw2-rm5w · 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