CVE-2026-90437: high-severity vulnerability in Gravity Forms
Gravity Forms <= 3.1.1 - Unauthenticated Stored Cross-Site Scripting via Post Excerpt / Post Custom Field / Rich-Text Paragraph Field Values
Published
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.2epss 0.2%
The Gravity Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Post Excerpt / Post Custom Field / Rich-Text Paragraph Field Values in all versions up to, and including, 3.1.1 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. This is possible because Post Excerpt, Post Custom Field, and Rich-Text-Editor-enabled Paragraph Text fields allow raw HTML submissions via allow_html(), and an entity-encoded payload stored in a data-dialog-confirm attribute evades wp_kses_post() at save time but is decoded into executable markup by the browser when the plugin's admin JavaScript passes the attribute value to insertAdjacentHTML().
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Affected products
Gravity Forms · Gravity FormsRelated CVEs — Gravity Forms
In the same product, most dangerous first.
CVE-2026-84434CRITICALGravity Forms <= 3.1.0.4 - Unauthenticated Arbitrary File Upload via Hidden File Upload FieldEPSS 3.9%CVE-2025-12352CRITICALGravity Forms <= 2.9.20 - Unauthenticated Arbitrary File Upload via 'copy_post_image'EPSS 1.1%CVE-2026-12997HIGHGravity Forms <= 2.10.4 - Unauthenticated Arbitrary File Read via 'gform_uploaded_files' ParameterEPSS 0.9%CVE-2025-12974HIGHGravity Forms <= 2.9.21.1 - Unauthenticated Arbitrary File Upload via Legacy Chunked UploadEPSS 0.7%CVE-2026-19513HIGHGravity Forms <= 3.0.2 - Unauthenticated Arbitrary File Upload via State/Chunk Hash ConfusionEPSS 0.7%CVE-2026-103039CRITICALGravity Forms <= 3.1.2 - Unauthenticated PHP Object Injection via Post Custom FieldEPSS 0.5%