CVE-2025-69030 is an authorization bypass vulnerability found in Mikado-Themes Backpack Traveler, a WordPress theme commonly used in travel and hospitality websites. The flaw arises from incorrect configuration of access control security levels, where a user-controlled key parameter can be manipulated to bypass authorization checks. This means that an attacker with some level of authenticated access (privileges) can escalate their permissions or access restricted resources without proper authorization. The vulnerability affects all versions up to and including 2.10.3. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N) indicates the attack can be performed remotely over the network with low complexity, requires privileges but no user interaction, and impacts confidentiality and integrity to a limited extent, without affecting availability. No public exploits or patches are currently available, but the issue is published and should be addressed promptly. The root cause is the improper enforcement of access control mechanisms, allowing attackers to supply crafted keys that circumvent intended security checks.

For European organizations, especially those in the travel, tourism, and hospitality sectors that utilize the Backpack Traveler theme, this vulnerability could lead to unauthorized access to sensitive customer data or administrative functions. This could result in data leakage, unauthorized content modification, or manipulation of booking or user information, undermining customer trust and regulatory compliance (e.g., GDPR). While the impact on availability is minimal, the breach of confidentiality and integrity could have reputational and financial consequences. Attackers with limited privileges could leverage this flaw to escalate their access, potentially facilitating further attacks or data exfiltration. The medium severity reflects a moderate risk that requires timely remediation to prevent exploitation.

Organizations should immediately audit their Backpack Traveler theme installations and verify the version in use, upgrading to a patched version once available. In the absence of an official patch, administrators should review and tighten access control configurations, ensuring that user-controlled keys or parameters cannot override authorization checks. Implementing strict input validation and sanitization on all user-supplied keys is critical. Additionally, monitoring logs for unusual privilege escalation attempts or access patterns related to key manipulation can help detect exploitation attempts early. Employing web application firewalls (WAFs) with custom rules to block suspicious requests targeting this vulnerability may provide interim protection. Finally, educating site administrators about the risks and ensuring minimal privilege principles are enforced can reduce the attack surface.