VulnSocial

CVE-2026-109997

LOWCVSS 7.2 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

The Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'formData.extra' parameter in all versions up to, and including, 3.15.5 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. The nf_ajax_submit endpoint issues a valid nonce to any requester on failure, effectively neutralizing the nonce check and making exploitation trivially achievable in a single unauthenticated request.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-11-08: 111-08
Referenced assets1 URL
By indicator
Full discourse1 post
  • ZeroPath Labs@ZeroPathLabs

    Ninja Forms CVE-2026-109997: Unauthenticated Stored XSS Attackers can exploit metadata key normalization to inject persistent scripts in Ninja Forms. Sites should patch ASAP. For more details, read ZeroPath's blog on this vuln. #AppSec #WordPress #InfoSec https://zeropath.com/blog/ninja-forms-cve-2026-109997-stored-xss

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    87 followersView on X

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