CVE-2026-15665 json
Fluent Support <= 2.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'redirect-to' Shortcode Attribute
published 2026-07-24 3 mo ago modified 2026-07-24 3 mo ago also EUVD-2026-48504
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 28%
- public exploits
- 0
- none known
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected products
- wpmanageninja Fluent Support – Helpdesk & Customer Support Ticket System
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/0c963224-e680-4ca6-85ae-07cd0ee6c1d4?source=cve
- plugins.trac.wordpress.org /browser/fluent-support/tags/2.3.0/app/Hooks/Handlers/AuthHandler.php#L149
- plugins.trac.wordpress.org /browser/fluent-support/tags/2.3.0/app/Hooks/Handlers/AuthHandler.php#L201
- plugins.trac.wordpress.org /browser/fluent-support/tags/2.3.0/app/Hooks/Handlers/AuthHandler.php#L500
- plugins.trac.wordpress.org /browser/fluent-support/tags/2.3.0/app/Hooks/Handlers/AuthHandler.php#L111
- plugins.trac.wordpress.org /changeset?reponame=&old=3609122%40fluent-support&new=3609122%40fluent-support
Sources
- CVE List CVE-2026-15665
- NVD CVE-2026-15665
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.