CVE-2026-86612: CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in Ninja Tables
The Ninja Tables WordPress plugin before 5.2.17 does not restrict shortcode expansion to administrator-authored table rows which, in a non-default configuration, allows unauthenticated users to have arbitrary shortcodes executed on a public page, and to permanently break that page, by submitting an ordinary form entry.
AI Analysis
Technical Summary
CVE-2026-86612 is an injection vulnerability (CWE-74) in the Ninja Tables WordPress plugin prior to version 5.2.17. The plugin fails to restrict shortcode expansion to administrator-authored table rows, enabling unauthenticated users to execute arbitrary shortcodes on public pages when the plugin is configured in a non-default manner. This can be exploited by submitting ordinary form entries, leading to arbitrary shortcode execution and permanent disruption of the affected page.
Potential Impact
The vulnerability allows unauthenticated attackers to execute arbitrary shortcodes on public pages, which can lead to information disclosure, integrity issues, and availability problems by permanently breaking the page. The CVSS 3.1 score is 5.6 (medium severity), reflecting network attack vector, high attack complexity, no privileges required, no user interaction, and impacts on confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade Ninja Tables to version 5.2.17 or later, where this vulnerability is fixed. Since this is a plugin vulnerability with a known fixed version, applying the official update is the recommended remediation.
CVE-2026-86612: CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in Ninja Tables
Description
The Ninja Tables WordPress plugin before 5.2.17 does not restrict shortcode expansion to administrator-authored table rows which, in a non-default configuration, allows unauthenticated users to have arbitrary shortcodes executed on a public page, and to permanently break that page, by submitting an ordinary form entry.
CVSS v3.1
Score 5.6medium
Affected software
Ninja Tables
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86612 is an injection vulnerability (CWE-74) in the Ninja Tables WordPress plugin prior to version 5.2.17. The plugin fails to restrict shortcode expansion to administrator-authored table rows, enabling unauthenticated users to execute arbitrary shortcodes on public pages when the plugin is configured in a non-default manner. This can be exploited by submitting ordinary form entries, leading to arbitrary shortcode execution and permanent disruption of the affected page.
Potential Impact
The vulnerability allows unauthenticated attackers to execute arbitrary shortcodes on public pages, which can lead to information disclosure, integrity issues, and availability problems by permanently breaking the page. The CVSS 3.1 score is 5.6 (medium severity), reflecting network attack vector, high attack complexity, no privileges required, no user interaction, and impacts on confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade Ninja Tables to version 5.2.17 or later, where this vulnerability is fixed. Since this is a plugin vulnerability with a known fixed version, applying the official update is the recommended remediation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-08T08:48:00.862Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab3aaf0f7a7c54106a5313b
Added to database: 09/23/2026, 10:33:20 UTC
Last enriched: 09/23/2026, 10:48:16 UTC
Last updated: 09/24/2026, 02:17:47 UTC
Views: 10
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.