CVE-2026-84753Network attack vectorHinoki check available

Unauthenticated arbitrary PHP object instantiation

Published Sep 3, 2026 · Updated Sep 3, 2026

PHP object injection in WPFunnels Mail Mint 1.31.0 and earlier allows remote attackers to instantiate arbitrary objects through form submissions. Unauthenticated custom-field processing deserializes attacker-supplied submission values without restricting the resulting PHP object classes. The public form path requires no account or user interaction, while further impact depends on the PHP object classes available to the injected object.

CVSS severity9.8
Critical
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

PHP object injection in WPFunnels Mail Mint 1.31.0 and earlier allows remote attackers to instantiate arbitrary objects through form submissions. Unauthenticated custom-field processing deserializes attacker-supplied submission values without restricting the resulting PHP object classes. The public form path requires no account or user interaction, while further impact depends on the PHP object classes available to the injected object.

The record

CVE
CVE-2026-84753
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
WPFunnels Team
Product
Mail Mint
Classifications
CWE-502, CAPEC-586, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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.

  1. Affected versionversion=n/a <=1.31.0 changes=[{"at":"1.31.1","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPFunnels Team · Mail Mintversion=n/a <=1.31.0 changes=[{"at":"1.31.1","status":"unaffected"}]

Published CVSS scores

9.8PatchstackCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
CAPEC-586Object Injection
T1190Exploit Public-Facing Application

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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