CVE-2026-87840 in Tripzzy Plugin
Summary
by MITRE • 09/20/2026
The Tripzzy WordPress plugin before 1.5.1 does not perform any capability or ownership checks on its administrative booking-management actions, which are additionally exposed to unauthenticated users and gated only by a token the Tripzzy WordPress plugin before 1.5.1 issues to any anonymous visitor on request, allowing unauthenticated attackers to alter the contents, stored totals and notes of arbitrary bookings.
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Analysis
by VulDB Data Team • 09/20/2026
The vulnerability identified in the Tripzzy WordPress plugin prior to version 1.5.1 represents a critical failure in access control mechanisms within an administrative interface that has been improperly exposed to public internet traffic. This flaw allows unauthenticated attackers to manipulate sensitive booking data, including altering contents, stored totals, and associated notes for arbitrary bookings. The root cause of this issue lies in the plugin's complete lack of capability or ownership verification when processing administrative actions related to booking management. In a secure WordPress environment, such operations should be strictly gated by user roles requiring specific capabilities, typically limited to administrators or authorized staff members who have authenticated sessions with appropriate permissions.
Instead of enforcing these standard security controls, the plugin relies solely on a token-based mechanism for authorization. While tokens are often used as an anti-CSRF measure, this implementation is fundamentally flawed because the token generation logic does not distinguish between authenticated and unauthenticated users. The system issues valid tokens to any anonymous visitor upon request, effectively neutralizing their protective value against unauthorized access. This design error means that anyone with internet connectivity can obtain a legitimate-looking authorization token and use it to forge requests that appear authentic to the server-side processing logic. Consequently, the distinction between public-facing functionality and administrative management is entirely erased, creating a direct path for exploitation by malicious actors without any need for prior authentication or privilege escalation.
From an operational perspective, this vulnerability poses severe risks to business integrity and financial security. Attackers can modify booking details to change prices, cancel reservations arbitrarily, or inject fraudulent notes that could mislead customer service teams. The ability to alter stored totals directly impacts revenue accuracy and accounting records, potentially leading to significant financial discrepancies. Furthermore, the manipulation of arbitrary bookings means that legitimate customers may have their reservations changed without consent, resulting in reputational damage and loss of trust. Since the vulnerability affects administrative functions, it also undermines the integrity of internal operational data, making it difficult for business owners to rely on the plugin's reporting features or inventory management capabilities.
This flaw aligns with CWE-284 Improper Access Control, specifically reflecting a failure to enforce proper restrictions on unauthenticated users performing privileged actions. It is further categorized under CWE-601 URL Redirection to Untrusted Site (Open Redirect) in some contexts if the token mechanism involves redirects, but more accurately fits CWE-352 Cross-Site Request Forgery due to the reliance on a predictable or publicly obtainable token for state-changing operations. In terms of MITRE ATT&CK mapping, this vulnerability facilitates the T1078 Valid Accounts technique by allowing attackers to bypass authentication requirements entirely, and it supports data manipulation activities consistent with impact tactics such as Data Manipulation (T1565). The exploitation vector is straightforward, requiring only HTTP requests crafted with a valid token obtained from any page on the site.
Mitigation strategies must prioritize immediate remediation through software updates or manual code intervention if an update is not immediately available. Administrators should upgrade to Tripzzy version 1.5.1 or later, where these access control checks have presumably been implemented correctly. If upgrading is delayed, temporary mitigations include restricting access to the plugin's administrative endpoints via web application firewall rules that block requests lacking valid session cookies from known IP ranges associated with internal networks. Additionally, implementing strict server-side validation for all booking modification actions to verify user roles and ownership of the specific booking resource before processing any changes is essential. Developers must ensure that future iterations adhere to the principle of least privilege, ensuring that administrative functions are never exposed without robust authentication and authorization checks independent of simple token presence.