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TI-2026-82950 Aliases CVE-2026-90437GHSA-8r7c-j2qw-g3gp

Stored cross-site scripting in Gravity Forms plugin for WordPress

Priority LOW 37CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting
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-79.

Summary

The Gravity Forms plugin for WordPress is vulnerable to stored cross-site scripting in all versions up to and including 3.1.1. Insufficient input sanitization and output escaping let an unauthenticated attacker store script in post excerpts, post custom fields and rich-text paragraph fields, and the plugin's admin JavaScript then decodes the stored value into executable markup. The injected script runs whenever a user accesses an affected page (CWE-79).

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

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().

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0019 8th 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
Yes
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
Gravity FormsGravity Formsup to 3.1.1—No fix listedCNA
  • Gravity Forms VendorGravity Forms Affected up to 3.1.1 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Gravity Forms.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Timeline

  1. 2026-10-30 Threatist record created from CVE-2026-90437
  2. 2026-10-30 Alias added: GHSA-8r7c-j2qw-g3gp
  3. 2026-10-30 CISA SSVC decision points changed
  4. 2026-10-30 Priority changed: MEDIUM → LOW

References

Other 2

  • TI-2026-58026 Gravity Forms <= 3.1.0.4 - Unauthenticated Arbitrary File Upload via Hidden File Upload Field CVSS 3.1CRITICAL 9.8
  • TI-2025-11329 Gravity Forms <= 2.9.20 - Unauthenticated Arbitrary File Upload via 'copy_post_image' CVSS 3.1CRITICAL 9.8
  • TI-2026-82952 PHP object injection in Gravity Forms via Post Custom Field CVSS 3.1CRITICAL 9.8
  • TI-2023-13292 WordPress Gravity Forms Plugin <= 2.7.3 is vulnerable to PHP Object Injection CVSS 3.1CRITICAL 9.8
  • TI-2026-11059 Gravity Forms <= 2.10.4 - Unauthenticated Arbitrary File Read via 'gform_uploaded_files' Parameter CVSS 3.1HIGH 7.5
  • TI-2026-15885 Gravity Forms <= 3.0.2 - Unauthenticated Arbitrary File Upload via State/Chunk Hash Confusion CVSS 3.1HIGH 8.1
See all 20 →

Sources

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