CVE-2026-16649 Gravity Forms CVE debrief

Who should care

Defenders responsible for WordPress installations with the Gravity Forms plugin should assess exposure and prioritize updating the plugin to a version that addresses this vulnerability.

Why it matters

The Gravity Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting, allowing unauthenticated attackers to inject arbitrary web scripts. Defenders should prioritize updating the plugin and verifying user input sanitization.

• Unauthenticated attackers can inject arbitrary web scripts in pages
• Injected scripts execute whenever a user accesses an injected page
• Defenders must update the Gravity Forms plugin to prevent exploitation
• Verification of plugin version and user input sanitization is necessary

Technical summary

The Gravity Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Post Body Field Value in all versions up to, and including, 2.10.5 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 exploit survives save-time sanitization because wp_kses_post allows the required HTML tags and attributes, and the client-side tooltip script re-parses the browser-decoded aria-label value as innerHTML while only stripping script elements, leaving onerror and other event-handler attributes fully intact and executable.

Defensive priority

Defenders should prioritize updating the Gravity Forms plugin to a version that addresses this vulnerability.

Recommended defensive actions

• Update the Gravity Forms plugin to a version that addresses this vulnerability
• Review and sanitize user input to prevent cross-site scripting
• Monitor for suspicious activity on affected systems
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its CVSS score of 7.2 and HIGH severity. The Gravity Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Post Body Field Value in all versions up to, and including, 2.10.5 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.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.