CVE-2026-4394Network attack vector

Stored XSS via hidden card-type submission

Published Apr 7, 2026 · Updated Apr 7, 2026

Stored XSS in Rocketgenius Gravity Forms 2.9.30 and earlier allows remote attackers to inject scripts through a card-type value. The submission parser stores an input_.4 value that is absent from the rendered form, and GF_Field_CreditCard later outputs that value without escaping. No authentication is required to submit the value, but an administrator must view the resulting dashboard entry before the script executes.

CVSS severity6.1
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Rocketgenius Gravity Forms 2.9.30 and earlier allows remote attackers to inject scripts through a card-type value. The submission parser stores an input_.4 value that is absent from the rendered form, and GF_Field_CreditCard later outputs that value without escaping. No authentication is required to submit the value, but an administrator must view the resulting dashboard entry before the script executes.

The record

CVE
CVE-2026-4394
Published
Apr 7, 2026
Updated
Apr 7, 2026
Vendor
Rocketgenius
Product
Gravity Forms
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.9.30

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Rocketgenius · Gravity Formsversion=0 <=2.9.30

Published CVSS scores

6.1WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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