CVE-2026-56037Network attack vector

Authenticated PHP object injection

Published Jul 2, 2026 · Updated Jul 2, 2026

PHP object injection in Themify Popup 1.4.3 and earlier allows remote authenticated users to instantiate attacker-controlled PHP objects. Published records identify deserialization of untrusted data but do not disclose the request handler, input parameter, or deserialization call that consumes it. Contributor-level access is required, and further impact depends on a usable property-oriented programming chain in the WordPress installation.

CVSS severityUnavailable
Unscored
EPSS probability0.52%
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 Themify Popup 1.4.3 and earlier allows remote authenticated users to instantiate attacker-controlled PHP objects. Published records identify deserialization of untrusted data but do not disclose the request handler, input parameter, or deserialization call that consumes it. Contributor-level access is required, and further impact depends on a usable property-oriented programming chain in the WordPress installation.

The record

CVE
CVE-2026-56037
Published
Jul 2, 2026
Updated
Jul 2, 2026
Vendor
Themify
Product
Themify Popup
Classifications
CWE-502, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 2, 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 <=1.4.3 changes=[{"at":"1.4.4","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Themify · Themify Popupversion=n/a <=1.4.3 changes=[{"at":"1.4.4","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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
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

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Your stack

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