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TI-2026-83461 Aliases CVE-2026-101326GHSA-wqc3-pwvg-9wvc

Shortcode execution in Ninja Forms lets subscribers run shortcodes

Priority LOW 25CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-94.

Summary

Ninja Forms (Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder) by kstover is affected from 0 through 3.15.5. The plugin runs do_shortcode on an unvalidated value, a flaw classified as CWE-94. An authenticated attacker with Subscriber access or higher can run arbitrary shortcodes when a field on a public page uses the user display name merge tag as its default value.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

The The Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 3.15.5 This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for authenticated attackers, with subscriber-level access and above, to execute arbitrary shortcodes. Exploitation requires that an administrator has configured at least one Ninja Forms field with its Default Value set to the {wp:user_display_name} merge tag on a publicly accessible page; a Subscriber need only set their display_name to a shortcode string via their profile and then visit that page.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00371 31st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Saturday DriveNinja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builderup to 3.15.5—No fix listedCNA
  • Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder VendorSaturday Drive Affected up to 3.15.5 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Ninja Forms (Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder).

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Timeline

  1. 2026-10-31 Threatist record created from CVE-2026-101326
  2. 2026-10-31 Alias added: GHSA-wqc3-pwvg-9wvc
  3. 2026-11-01 Priority changed: MEDIUM → LOW
  4. 2026-11-05 CISA SSVC decision points changed

References

Other 8

  • TI-2026-00527 Ninja Forms - File Upload <= 3.3.26 - Unauthenticated Arbitrary File Upload CVSS 3.1CRITICAL 9.8
  • TI-2025-08325 Ninja-forms < 3.11.1 - Unauthenticated PHP Objection CVSS 3.1CRITICAL 9.8
  • TI-2016-01107 The Ninja Forms plugin before 2.9.42.1 for WordPress allows remote attackers to conduct… CVSS 3.0CRITICAL 9.8
  • TI-2023-19777 WordPress Ninja Forms plugin <= 3.6.25 - Subscriber+ Broken Access Control vulnerability CVSS 3.1HIGH 8.8
  • TI-2022-00792 Ninja Forms - File Uploads Extension <= 3.3.0 - Arbitrary File Upload CVSS 3.1CRITICAL 9.8
  • TI-2022-02691 NinjaForms < 3.6.13 - Admin+ PHP Objection Injection CVSS 3.1HIGH 7.2
See all 94 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences