Organisations Hit by Greeny CVE-2026-93940 Must Patch Critical Object Injection Vulnerability Now

Organisations using the Greeny theme face immediate risk from a critical deserialization vulnerability. The flaw, identified as CVE-2026-93940, allows attackers to inject objects by processing untrusted data. This issue impacts all versions of the ThemeREX Group Greeny theme up to and including version 2.10.0. Security teams must verify their current installations against this version range to determine exposure.

What is the technical nature of this vulnerability?

The vulnerability stems from CWE-502, which relates to the deserialization of untrusted data. According to the National Vulnerability Database, this weakness allows for Object Injection. Attackers can exploit this by supplying malicious serialized data that the application processes without adequate validation. This can lead to arbitrary code execution or other severe impacts, depending on the application context.

Which specific software versions are affected?

The issue affects ThemeREX Group Greeny from its initial release through version 2.10.0. Any installation running these versions is vulnerable to the described Object Injection attack. There is no mention of a specific starting version other than "n/a", implying all prior releases are at risk. Users must confirm their exact version number to assess their status.

Is there a confirmed patch available yet?

No fix has been confirmed yet in the provided source material. The NVD record details the vulnerability and affected versions but does not list a remediated version. Until ThemeREX Group releases an update that addresses CVE-2026-93940, affected systems remain exposed. Teams should monitor vendor communications for official patch release dates.

What are the immediate implications for security teams?

Security teams should treat this as a high-priority issue due to the CVSS 9.8 rating. The ability to inject objects via untrusted data deserialization poses a significant threat to application integrity. Immediate action includes auditing all environments for Greeny theme usage. Teams should prepare to isolate or restrict access to affected components if a patch is not immediately available.

What to do and how to stay safe: CVE-2026-93940

• Audit all WordPress or CMS installations to identify any use of the Greeny theme by ThemeREX Group.
• Check the specific version of the Greeny theme installed; if it is 2.10.0 or lower, it is vulnerable.
• Monitor vendor announcements for an official security update that resolves CVE-2026-93940.
• Implement strict input validation and monitoring for unusual object injection attempts on affected systems.

General security guidance from the Phish Herald newsroom. It is not confirmed advice from the organisations named in this story.

Frequently asked questions

What is the CVSS score for CVE-2026-93940?

The Common Vulnerability Scoring System rating for this vulnerability is 9.8, which is classified as Critical.

Which versions of Greeny are vulnerable to this flaw?

All versions of ThemeREX Group Greeny from the initial release through version 2.10.0 are affected.

What type of attack does this vulnerability enable?

This vulnerability allows for Object Injection through the deserialization of untrusted data.