CVE-2025-9083Public exploitNetwork attack vector

Unauthenticated PHP object injection via Repeatable Fieldset

Published Sep 18, 2025 · Updated Sep 18, 2025

PHP object injection in Saturday Drive Ninja Forms before 3.11.1 allows remote attackers to inject objects through form submissions. The Repeatable Fieldset submission path passes an attacker-controlled field value to maybe_unserialize(), permitting object wakeup when serialized PHP data is supplied. A published proof of concept reaches the path without authentication when a Repeatable Fieldset is embedded in a public form; meaningful impact requires a suitable gadget class on the site.

CVSS severity9.8
Critical
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

PHP object injection in Saturday Drive Ninja Forms before 3.11.1 allows remote attackers to inject objects through form submissions. The Repeatable Fieldset submission path passes an attacker-controlled field value to maybe_unserialize(), permitting object wakeup when serialized PHP data is supplied. A published proof of concept reaches the path without authentication when a Repeatable Fieldset is embedded in a public form; meaningful impact requires a suitable gadget class on the site.

The record

CVE
CVE-2025-9083
Published
Sep 18, 2025
Updated
Sep 18, 2025
Vendor
Saturday Drive
Product
Ninja Forms
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 2025Record 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 <3.11.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Saturday Drive · Ninja Formsversion=0 <3.11.1

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

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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