Unauthenticated stored XSS via unvalidated repeater index
Published Jul 21, 2026 · Updated Jul 21, 2026
Stored XSS in Ninja Forms 3.10.4 through 3.14.8 allows remote attackers to execute scripts in an administrator's browser via public forms. parseSubmissionIndex() accepts nonnumeric repeater child keys, and admin_form_element() places the resulting index into administrative HTML without output escaping. Exploitation requires no account but does require an exposed form with a Repeatable Fieldset and an administrator to view the stored submission; the script then acts in that administrator's WordPress session.
Summary
What happened
Stored XSS in Ninja Forms 3.10.4 through 3.14.8 allows remote attackers to execute scripts in an administrator's browser via public forms. parseSubmissionIndex() accepts nonnumeric repeater child keys, and admin_form_element() places the resulting index into administrative HTML without output escaping. Exploitation requires no account but does require an exposed form with a Repeatable Fieldset and an administrator to view the stored submission; the script then acts in that administrator's WordPress session.
The record
- CVE
- CVE-2026-65048
- Published
- Jul 21, 2026
- Updated
- Jul 21, 2026
- Vendor
- Saturday Drive
- Product
- Ninja Forms
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 21, 2026CVE publishedPublication date reported by the CVE source.
- Jul 21, 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.
- Affected versionversion=3.10.4 <3.14.9
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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