Gravity Forms Plugin Stored XSS via List Field Injection

The Gravity Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via List Field in all versions up to, and including, 3.1.2 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. Successful exploitation requires the administrator to click the injected link in the entry detail view and confirm a dialog, which triggers the admin JavaScript bundle's delegated data-dialog-callback handler to invoke the attacker-supplied function reference.

Casky was already ahead

This CVE exploits attack patterns that Casky's 323matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

Gravity Forms, a widely-deployed WordPress form plugin, contains a stored cross-site scripting (XSS) vulnerability in its List Field functionality affecting all versions through 3.1.2. The vulnerability stems from insufficient input sanitization and output escaping, allowing unauthenticated attackers to inject malicious scripts into form entries. When administrators view injected entries and confirm a dialog prompt, the payload executes in their browser context, potentially compromising WordPress administrative accounts and enabling further site compromise. This affects any WordPress installation using Gravity Forms for data collection, making it a high-risk vulnerability given the plugin's popularity and the administrative access typically required to trigger execution.

Casky.ai's 323 mapped skills detect the attack patterns associated with this vulnerability by analyzing indicators aligned with MITRE ATT&CK techniques TA0001 (Initial Access) and TA0043 (Reconnaissance). Practitioners using Casky would observe detection signatures identifying malicious script injection attempts in form field submissions, suspicious serialized data patterns in entry storage, and JavaScript payload analysis in stored database entries. The platform's Claude-powered extended reasoning correlates input validation bypasses with stored payload execution chains, flagging the critical transition from unauthenticated submission to authenticated admin context execution. Findings would highlight entry detail view access patterns combined with DOM-based script execution, enabling security teams to identify compromised form entries before administrative interaction and prioritize remediation of unpatched Gravity Forms installations.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

323 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-97645.

Abuse of Public-Facing API: Mobile API Abuse

mobile security · low

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abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

MITRE ATT&CK Techniques

TA0001 TA0043

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