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TI-2026-62029 Aliases CVE-2026-91827GHSA-jvgp-rj42-qjww

Ninja Forms 3.15.3 - Unauthenticated PHP Object Injection via CSV Export

Priority LOW 35CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00348 28th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Ninja Forms (Unknown): 3.15.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownNinja Forms3.15.3 to before 3.15.43.15.4Patch availableCNA
  • Ninja Forms VendorUnknown Affected 3.15.3 to before 3.15.4 Fixed in 3.15.4 Patch available CNA

Remediation

  • Fix · CNA Ninja Forms (Unknown) Fixed in 3.15.4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Ninja Forms 3.15.4

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-62341 Ninja Forms 3.15.3 - Unauthenticated Stored XSS via Paragraph Text Field in Submissions AdminPriority MEDIUM 40
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-91827
  2. 2026-10-03 Alias added: GHSA-jvgp-rj42-qjww

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences