CVE-2026-91827: high-severity vulnerability in Ninja Forms
Ninja Forms 3.15.3 - Unauthenticated PHP Object Injection via CSV Export
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 7.5epss 0.3%
The Ninja Forms WordPress plugin 3.15.3 does not prevent user-submitted form field values from being deserialised when an administrator later exports form submissions to CSV, allowing unauthenticated attackers to perform PHP Object Injection; if a suitable POP chain is present via another installed plugin or theme, this can lead to actions such as arbitrary file operations or remote code execution.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Unknown · Ninja Formspublic PoCs found — 1
cve_referencewpscan.com/vulnerability/7b279db2-92e0-4122-b5c6-aa12b7b01858/unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Ninja Forms
In the same product, most dangerous first.
CVE-2024-7354MEDIUMNinja Forms 3.8.6-3.8.10 - Reflected XSSEPSS 0.7%CVE-2025-9083CRITICALNinja-forms < 3.11.1 - Unauthenticated PHP ObjectionEPSS 0.6%CVE-2026-92438HIGHNinja Forms 3.15.3 - Unauthenticated Stored XSS via Paragraph Text Field in Submissions AdminEPSS 0.4%CVE-2025-14072MEDIUMNinja Forms < 3.13.3 - Unauthenticated Token Generation and Submission DisclosureEPSS 0.3%CVE-2025-2524MEDIUMNinja Forms < 3.10.1 - Admin+ Stored XSSEPSS 0.3%CVE-2025-2561MEDIUMNinja Forms < 3.10.1 - Admin+ Stored XSSEPSS 0.3%