CVE-2024-3240Network attack vector

Authenticated object injection via shortcode deserialization

Published May 4, 2024 · Updated Apr 8, 2026

PHP object injection in ConvertPlug and ConvertPlus 3.5.25 and earlier allows remote authenticated users to inject objects via a shortcode. The smile_info_bar shortcode deserializes the untrusted settings_encoded attribute, creating an attacker-supplied PHP object. Contributor access is required; no POP chain ships with the plugin, but a chain from another plugin or theme enables file deletion, data retrieval, or code execution.

CVSS severity8.8
High
EPSS probability0.77%
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 ConvertPlug and ConvertPlus 3.5.25 and earlier allows remote authenticated users to inject objects via a shortcode. The smile_info_bar shortcode deserializes the untrusted settings_encoded attribute, creating an attacker-supplied PHP object. Contributor access is required; no POP chain ships with the plugin, but a chain from another plugin or theme enables file deletion, data retrieval, or code execution.

The record

CVE
CVE-2024-3240
Published
May 4, 2024
Updated
Apr 8, 2026
Vendor
Presto Made, Inc.
Product
ConvertPlus
Classifications
CWE-502, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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=0 <=3.5.25

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Presto Made, Inc. · ConvertPlusversion=0 <=3.5.25
Brainstorm Force · ConvertPlugversion=0 <=3.5.25

Published CVSS scores

8.8WordfenceCVSS:3.1/AV:N/AC:L/PR:L/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 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.

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Technologies

Your stack

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Your stack

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