CVE-2024-4838: CWE-502 Deserialization of Untrusted Data in Brainstorm Force ConvertPlus
The ConvertPlus plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.5.26 via deserialization of untrusted input from the 'settings_encoded' attribute of the 'smile_modal' shortcode. This makes it possible for authenticated attackers, with contributor-level access and above, to inject a PHP Object. No POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
AI Analysis
Technical Summary
CVE-2024-4838 is a PHP Object Injection vulnerability in the Brainstorm Force ConvertPlus WordPress plugin (versions up to 3.5.26). It arises from unsafe deserialization of untrusted input in the 'settings_encoded' attribute of the 'smile_modal' shortcode. Authenticated users with contributor-level permissions or higher can exploit this to inject PHP objects. While the plugin itself does not contain a POP chain necessary for full exploitation, the presence of other plugins or themes with such chains could allow attackers to perform destructive actions such as arbitrary file deletion, sensitive data disclosure, or remote code execution. The vulnerability has a CVSS 3.1 score of 7.5 (high severity). No patch or official fix details are currently available.
Potential Impact
If exploited in an environment where a POP chain is available via other installed plugins or themes, this vulnerability could lead to arbitrary file deletion, disclosure of sensitive information, or remote code execution. The attack requires authenticated access at contributor level or above, limiting exposure to users with some level of trust on the site. Without a POP chain, the impact is limited to PHP Object Injection without direct exploitation consequences.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict contributor-level and higher access to trusted users only. Monitor for updates from Brainstorm Force regarding a security patch for this vulnerability. Avoid installing untrusted plugins or themes that could provide a POP chain enabling full exploitation.
CVE-2024-4838: CWE-502 Deserialization of Untrusted Data in Brainstorm Force ConvertPlus
Description
The ConvertPlus plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 3.5.26 via deserialization of untrusted input from the 'settings_encoded' attribute of the 'smile_modal' shortcode. This makes it possible for authenticated attackers, with contributor-level access and above, to inject a PHP Object. No POP chain is present in the vulnerable plugin. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-4838 is a PHP Object Injection vulnerability in the Brainstorm Force ConvertPlus WordPress plugin (versions up to 3.5.26). It arises from unsafe deserialization of untrusted input in the 'settings_encoded' attribute of the 'smile_modal' shortcode. Authenticated users with contributor-level permissions or higher can exploit this to inject PHP objects. While the plugin itself does not contain a POP chain necessary for full exploitation, the presence of other plugins or themes with such chains could allow attackers to perform destructive actions such as arbitrary file deletion, sensitive data disclosure, or remote code execution. The vulnerability has a CVSS 3.1 score of 7.5 (high severity). No patch or official fix details are currently available.
Potential Impact
If exploited in an environment where a POP chain is available via other installed plugins or themes, this vulnerability could lead to arbitrary file deletion, disclosure of sensitive information, or remote code execution. The attack requires authenticated access at contributor level or above, limiting exposure to users with some level of trust on the site. Without a POP chain, the impact is limited to PHP Object Injection without direct exploitation consequences.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict contributor-level and higher access to trusted users only. Monitor for updates from Brainstorm Force regarding a security patch for this vulnerability. Avoid installing untrusted plugins or themes that could provide a POP chain enabling full exploitation.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2024-05-13T16:21:48.419Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 699f6b96b7ef31ef0b556f3d
Added to database: 2/25/2026, 9:37:26 PM
Last enriched: 4/9/2026, 8:08:09 PM
Last updated: 4/12/2026, 4:22:03 AM
Views: 10
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.