CVE-2025-32928 in Altair Theme
Summary
by MITRE • 05/19/2025
Deserialization of Untrusted Data vulnerability in ThemeGoods Altair allows Object Injection.This issue affects Altair: from n/a through 5.2.2.
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Analysis
by VulDB Data Team • 05/30/2025
The vulnerability identified as CVE-2025-32928 represents a critical deserialization flaw in the ThemeGoods Altair WordPress theme, specifically impacting versions ranging from an unspecified initial version through 5.2.2. This vulnerability falls under the category of deserialization of untrusted data, which is classified as CWE-502 within the Common Weakness Enumeration framework. The flaw enables attackers to inject malicious objects during the deserialization process, potentially leading to arbitrary code execution or other severe security implications.
The technical implementation of this vulnerability occurs when the Altair theme processes user-supplied data that is subsequently deserialized without proper validation or sanitization. This object injection attack vector allows malicious actors to craft specially formatted data that, when processed by the vulnerable theme, executes unintended operations on the target system. The vulnerability exists because the theme fails to implement adequate input validation mechanisms before deserializing potentially malicious payloads, creating an attack surface that can be exploited by remote attackers.
From an operational standpoint, this vulnerability poses significant risks to WordPress installations using the affected Altair theme. Attackers could leverage this weakness to execute arbitrary code on the web server, potentially gaining full control over the affected system. The impact extends beyond simple code execution to include potential data breaches, privilege escalation, and system compromise. The vulnerability's remote exploitability means that attackers do not require local access to the system, making it particularly dangerous in publicly accessible environments where WordPress sites are deployed.
The attack pattern associated with this vulnerability aligns with ATT&CK technique T1203 - Exploitation for Client Execution, as it involves leveraging a deserialization vulnerability to execute malicious code remotely. Security practitioners should note that this issue affects a widely used WordPress theme, increasing the potential attack surface and making it a high-priority target for threat actors. The vulnerability's classification as a deserialization flaw means that standard input validation measures may not be sufficient to prevent exploitation, requiring more comprehensive security controls.
Mitigation strategies for CVE-2025-32928 should include immediate patching of the Altair theme to version 5.2.3 or later, which contains the necessary security fixes. Organizations should also implement network-level protections such as web application firewalls that can detect and block malicious deserialization attempts. Additional defensive measures include implementing proper input validation at multiple layers, using secure coding practices that avoid unsafe deserialization methods, and conducting regular security assessments of WordPress themes and plugins. The vulnerability demonstrates the importance of maintaining up-to-date software components and implementing robust security controls around data processing operations.