The The Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder plugin for
Source GCVE Database
Not known to be exploited · CVSS 6.5 Medium.
Data as of 31 Oct 2026, 07:09 UTC
Thin evidence
One scorer or none| CNA (Wordfence) | CVSS 3.1 | 6.5 |
|---|
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 31 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| kstoverNinja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder | Affected
| Fixed in– |
AI-suggested
Since the vulnerability affects versions up to 3.15.5, upgrading to a later version if available is recommended once a fix is released. Until then, restrict access to the plugin's functionality or disable it if possible to mitigate risk. Monitor the vendor's advisory channels for official fixes or updates.
Description
The Ninja Forms WordPress plugin up to version 3.15.5 contains a vulnerability that allows unauthenticated attackers to execute arbitrary shortcodes due to improper validation before calling do_shortcode.
References
- nvd.nist.gov/vuln/detail/CVE-2026-100155 (opens in a new tab)
- plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/AJAX/Controllers/Submission.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/AJAX/Controllers/Submission.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/Abstracts/MergeTags.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/Actions/SuccessMessage.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/Actions/SuccessMessage.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/ninja-forms/tags/3.15.4/includes/MergeTags/Fields.php (opens in a new tab)
- plugins.trac.wordpress.org/changeset?reponame=&new=3749135%40ninja-forms%2Ftags%2F3.15.6&old=3717122%40ninja-forms%2Ftags%2F3.15.5 (opens in a new tab)
- wordpress.org/plugins/ninja-forms (opens in a new tab)
- wordfence.com/threat-intel/vulnerabilities/id/a1cf42f7-77c6-4594-a6a4-cebf5c3558d7?source=cve (opens in a new tab)