Critical Deserialization Flaw Found in Axiomthemes Veto Plugin Up to 1.6.0
The National Vulnerability Database rates CVE-2026-93927 as critical, warning that untrusted data deserialization allows object injection in Axiomthemes Veto.
Key points
- CVE-2026-93927 is rated CVSS 9.8 critical severity by the National Vulnerability Database.
- The vulnerability enables object injection through the deserialization of untrusted data.
- Axiomthemes Veto versions from initial release through 1.6.0 are affected by this flaw.
The National Vulnerability Database published a record for CVE-2026-93927, identifying a critical security flaw in the Axiomthemes Veto plugin. This vulnerability allows attackers to inject objects by exploiting how the software handles untrusted data during deserialization processes.
At a glance
- CVE
- CVE-2026-93927
- Product
- Axiomthemes Veto
- CVSS
- 9.8 Critical
- Weakness
- insecure deserialization
- Exploited
- No known exploitation
The National Vulnerability Database assigned this issue a CVSS score of 9.8, classifying it as critical. The weakness stems from CWE-502, which describes the deserialization of untrusted data. Attackers can leverage this flaw to execute arbitrary code or inject malicious objects into the application environment without proper validation.
Context and Background
Deserialization vulnerabilities remain a persistent threat in web applications and plugins. When software converts serialized data back into objects, it often trusts the data structure implicitly. If an attacker can manipulate this data stream, they can force the application to instantiate unexpected objects.
The Common Weakness Enumeration categorizes this specific issue under CWE-502. This classification highlights the risk of processing data that has not been verified for integrity or authenticity. Such flaws frequently lead to remote code execution or complete system compromise if the underlying platform lacks additional sandboxing.
Who Is Affected
Axiomthemes Veto is the specific product impacted by this vulnerability. The National Vulnerability Database states that the issue affects versions from the initial release through version 1.6.0. Any installation running these versions is potentially exposed to object injection attacks.
Administrators using Axiomthemes Veto should verify their current version immediately. If the installed version is 1.6.0 or lower, the system is considered vulnerable according to the NVD record. There is no indication in the source material that newer versions have resolved this specific issue.
What should you do?
Security teams should audit their environments for any instances of Axiomthemes Veto. Identifying the exact version installed is crucial for determining exposure. Organizations should also monitor network traffic for unusual deserialization attempts or unexpected object creation events that could indicate exploitation.
What to do and how to stay safe: Axiomthemes
- Inventory all systems to identify if Axiomthemes Veto is installed and check the version number against the affected range up to 1.6.0.
- Monitor server logs and application performance metrics for signs of abnormal object creation or unexpected resource spikes that may indicate exploitation.
- Restrict network access to vulnerable systems using firewalls or web application firewalls to limit exposure to untrusted external data sources.
- Prepare an incident response plan that includes steps for isolating compromised systems once the vendor provides an update or mitigation strategy.
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 CVSS score for CVE-2026-93927?
The National Vulnerability Database rates CVE-2026-93927 with a CVSS score of 9.8, which is considered critical.
Which versions of Axiomthemes Veto are affected?
The vulnerability affects Axiomthemes Veto versions from the initial release through version 1.6.0.
What type of vulnerability is CVE-2026-93927?
It is a deserialization of untrusted data vulnerability, classified under CWE-502, which allows for object injection.
