CVE-2026-16655 json
Fluent Forms <= 6.2.7 - Unauthenticated Stored Cross-Site Scripting via Name Field Nested `password` Member
published 3mo ago modified 3mo ago also EUVD-2026-50270
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
Summary
The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Name Field Nested `password` Member in all versions up to, and including, 6.2.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Is CVE-2026-16655 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3mo ago
Exploit prediction
0.53% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- wpmanageninja Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/635e19ba-da98-459c-ab91-ff969b0812fd?source=cve
- plugins.trac.wordpress.org /browser/fluentform/tags/6.2.7/boot/globals.php#L110
- plugins.trac.wordpress.org /browser/fluentform/tags/6.2.7/app/Hooks/Ajax.php#L17
- plugins.trac.wordpress.org /browser/fluentform/tags/6.2.7/app/Modules/SubmissionHandler/SubmissionHandler.php#L20
- plugins.trac.wordpress.org /browser/fluentform/tags/6.2.7/app/Services/Form/SubmissionHandlerService.php#L123
- plugins.trac.wordpress.org /browser/fluentform/tags/6.2.7/app/Modules/Form/FormDataParser.php#L317
- plugins.trac.wordpress.org /browser/fluentform/tags/6.2.7/app/Services/Integrations/GlobalNotificationService.php#L59
- plugins.trac.wordpress.org /browser/fluentform/tags/6.2.6/boot/globals.php#L110
- plugins.trac.wordpress.org /browser/fluentform/tags/6.2.6/app/Hooks/Ajax.php#L17
- plugins.trac.wordpress.org /browser/fluentform/tags/6.2.6/app/Modules/SubmissionHandler/SubmissionHandler.php#L20
- plugins.trac.wordpress.org /browser/fluentform/tags/6.2.6/app/Services/Form/SubmissionHandlerService.php#L123
- plugins.trac.wordpress.org /browser/fluentform/tags/6.2.6/app/Modules/Form/FormDataParser.php#L317
- plugins.trac.wordpress.org /browser/fluentform/tags/6.2.6/app/Services/Integrations/GlobalNotificationService.php#L59
- plugins.trac.wordpress.org /changeset/3619584/fluentform/trunk/boot/globals.php
- plugins.trac.wordpress.org /changeset?old_path=%2Ffluentform/tags/6.2.7&new_path=%2Ffluentform/tags/6.2.8
Sources
- CVE List CVE-2026-16655
- NVD CVE-2026-16655
Fencer Intel 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.