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CVE-2026-100155VulnerabilityPublished

The The Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder plugin for

Source GCVE Database

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Authoritative record:CVE-2026-100155· Medium 6.5

Not known to be exploited · CVSS 6.5 Medium.

Data as of 31 Oct 2026, 07:09 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Wordfence)CVSS 3.16.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 31 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
kstoverNinja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form BuilderAffected
  • <=3.15.5
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

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