Critical Deserialization Flaw Found in ThemeREX Edema Plugin Versions Up to 1.2.2.2
A severe object injection vulnerability in ThemeREX Group Edema allows untrusted data deserialization, posing a high risk to affected installations.
Key points
- CVE-2026-93941 is rated CVSS 9.8 Critical by the National Vulnerability Database.
- The flaw exists in ThemeREX Group Edema versions from n/a through 1.2.2.2.
- The vulnerability involves CWE-502, allowing object injection via untrusted data.
The National Vulnerability Database has recorded CVE-2026-93941 as a critical security vulnerability within the ThemeREX Group Edema plugin. This issue allows for the deserialization of untrusted data, creating a significant risk of object injection for affected systems.
At a glance
- CVE
- CVE-2026-93941
- Product
- ThemeREX Group Edema
- CVSS
- 9.8 Critical
- Weakness
- insecure deserialization
- Exploited
- No known exploitation
The flaw is classified with a CVSS score of 9.8, indicating a critical severity level. According to the NVD record, the vulnerability stems from CWE-502, which pertains to the improper handling of untrusted data during deserialization processes. This specific weakness enables attackers to inject objects into the application, potentially leading to remote code execution or other severe impacts.
Context and Background
Deserialization vulnerabilities are among the most dangerous flaws in software development because they often allow attackers to bypass security controls entirely. When an application processes untrusted data without proper validation, it can execute arbitrary commands or manipulate application state. The NVD description for CVE-2026-93941 explicitly notes that this issue allows object injection, a technique that can compromise the integrity and availability of the host system.
The assignment of a 9.8 CVSS score reflects the ease with which an attacker could exploit this vulnerability and the high impact it would have on confidentiality, integrity, and availability. Such high-severity ratings typically indicate that no authentication or complex user interaction is required to trigger the exploit, making it a prime target for automated scanning tools and malicious actors.
Who Is Affected
The vulnerability affects the ThemeREX Group Edema plugin specifically. According to the NVD record, the issue impacts versions from n/a through 1.2.2.2. This means that any installation running version 1.2.2.2 or earlier is vulnerable to this object injection attack. Users who have not updated to a version higher than 1.2.2.2 remain exposed to this critical risk.
ThemeREX Group is known for developing various web development tools and plugins. The presence of such a high-severity flaw in their Edema product highlights the importance of rigorous code review and security testing in software development. Administrators managing sites or applications that utilize this plugin must verify their current version immediately to determine if they fall within the affected range.
What should you do?
Security professionals should audit their environments to identify any instances of the ThemeREX Group Edema plugin. If the installed version is 1.2.2.2 or lower, the system is considered vulnerable. Organizations should monitor for any official statements from ThemeREX Group regarding a patch or update. Until a fix is available, reducing the attack surface by restricting access to the affected application is recommended.
What to do and how to stay safe: ThemeREX Group
- Inventory all systems to identify installations of ThemeREX Group Edema and check version numbers against the affected range up to 1.2.2.2.
- Isolate vulnerable systems from untrusted networks to prevent potential exploitation of the deserialization flaw.
- Monitor official channels from ThemeREX Group for the release of a security patch or updated version.
- Review server logs for any unusual activity that might indicate an attempt at object injection or unauthorized data deserialization.
Step-by-step guide: Risk Based Vulnerability Management: Prioritize Fixes by Actual Threat
General security guidance from the Threat Times newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
What is the CVE ID for the ThemeREX Edema vulnerability?
The CVE ID for this vulnerability is CVE-2026-93941.
Which versions of ThemeREX Group Edema are affected?
Versions from n/a through 1.2.2.2 are affected by this critical flaw.
What is the CVSS score for CVE-2026-93941?
The CVSS score is 9.8, which is rated as Critical.
