CVE-2026-62103Network attack vectorHinoki check available

Unauthenticated PHP object injection

Published Sep 11, 2026 · Updated Sep 11, 2026

PHP object injection in WPEverest Everest Forms 3.6.0 and earlier allows remote attackers to instantiate PHP objects without authentication. The vendor has not published the affected function, input field, or unsafe deserialization path that passes attacker-controlled data to PHP object construction. Exploitation requires a reachable WordPress installation with the plugin enabled; further effects depend on classes that form a usable property-oriented programming chain.

CVSS severityUnavailable
Unscored
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

PHP object injection in WPEverest Everest Forms 3.6.0 and earlier allows remote attackers to instantiate PHP objects without authentication. The vendor has not published the affected function, input field, or unsafe deserialization path that passes attacker-controlled data to PHP object construction. Exploitation requires a reachable WordPress installation with the plugin enabled; further effects depend on classes that form a usable property-oriented programming chain.

The record

CVE
CVE-2026-62103
Published
Sep 11, 2026
Updated
Sep 11, 2026
Vendor
WPEverest
Product
Everest Forms
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=3.6.0 changes=[{"at":"3.6.1","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPEverest · Everest Formsversion=n/a <=3.6.0 changes=[{"at":"3.6.1","status":"unaffected"}]

Published CVSS scores

No CVSS assessment is available in this record.

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 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 exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo