Unauthenticated validation bypass via field metadata overwrite
Published Jul 21, 2026 · Updated Jul 21, 2026
Client-side enforcement in Saturday Drive Ninja Forms before 3.14.9 allows remote attackers to bypass form validation via AJAX. The unauthenticated submission handler merges attacker-controlled field metadata over server-loaded definitions before validation, allowing field types, required flags, and CAPTCHA settings to be replaced. The public nopriv endpoint therefore accepts unverified content that can trigger configured actions, including email notification and database storage.
Summary
What happened
Client-side enforcement in Saturday Drive Ninja Forms before 3.14.9 allows remote attackers to bypass form validation via AJAX. The unauthenticated submission handler merges attacker-controlled field metadata over server-loaded definitions before validation, allowing field types, required flags, and CAPTCHA settings to be replaced. The public nopriv endpoint therefore accepts unverified content that can trigger configured actions, including email notification and database storage.
The record
- CVE
- CVE-2026-65051
- Published
- Jul 21, 2026
- Updated
- Jul 21, 2026
- Vendor
- Saturday Drive
- Product
- Ninja Forms
- Classifications
- CWE-602, T1190
- 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=0 <3.14.9
What conditions does exploitation require?
What is affected?
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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