CVE-2025-69029 is a medium-severity authorization bypass vulnerability found in the Select-Themes Struktur product, affecting versions up to and including 2.5.1. The root cause is an incorrectly configured access control mechanism that allows attackers to exploit user-controlled keys to bypass authorization checks. This means that an attacker with low-level privileges can manipulate certain keys or parameters that the system uses to enforce security levels, effectively elevating their access rights without proper authentication or authorization. The vulnerability is exploitable remotely over the network (AV:N) with low attack complexity (AC:L), requiring only privileges at a low level (PR:L) and no user interaction (UI:N). The impact primarily affects confidentiality and integrity, allowing unauthorized access to sensitive data or unauthorized modification of resources, but does not affect system availability. No known exploits have been reported in the wild as of the publication date. The vulnerability highlights the importance of correctly configuring access control policies and validating user input that influences security decisions. Since Struktur is a product used in web environments, exploitation could lead to unauthorized data exposure or manipulation within affected applications. The lack of an available patch at the time of reporting necessitates immediate mitigation through configuration reviews and monitoring.

For European organizations, this vulnerability poses a risk of unauthorized data access and modification within applications using the Struktur product. Confidentiality breaches could expose sensitive business or customer information, leading to regulatory compliance issues under GDPR and potential reputational damage. Integrity violations could result in unauthorized changes to critical data or configurations, potentially disrupting business processes or enabling further attacks. Since the vulnerability requires only low privileges and no user interaction, it lowers the barrier for attackers to escalate privileges within affected systems. Organizations relying on Struktur for web content management or application frameworks may face targeted exploitation attempts, especially if they have not yet applied patches or reviewed access control settings. The absence of known exploits reduces immediate risk but does not eliminate the threat, as attackers may develop exploits over time. The medium severity rating suggests that while the impact is significant, it is not catastrophic, but still warrants prompt attention to prevent exploitation.

1. Immediately review and audit all access control configurations within Struktur deployments to ensure that security levels are correctly enforced and not influenced by user-controlled keys. 2. Implement strict input validation and sanitization on any parameters or keys that influence authorization decisions to prevent manipulation. 3. Monitor logs and access patterns for unusual privilege escalation attempts or unauthorized access activities related to Struktur. 4. Engage with the vendor Select-Themes to obtain and apply patches or updates as soon as they become available. 5. Restrict network access to Struktur management interfaces to trusted IP ranges and enforce strong authentication mechanisms to reduce exposure. 6. Conduct security awareness training for administrators managing Struktur to recognize and respond to potential exploitation attempts. 7. Consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block suspicious requests targeting authorization bypass vectors. 8. Regularly update and patch all related software components to minimize the attack surface.