CVE-2026-27435 in Woffice Plugin
Summary
by MITRE • 07/01/2026
Missing Authorization vulnerability in WofficeIO Woffice allows Exploiting Incorrectly Configured Access Control Security Levels.
This issue affects Woffice: from n/a before 5.4.33.
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Analysis
by VulDB Data Team • 07/01/2026
The Missing Authorization vulnerability in WofficeIO Woffice represents a critical access control flaw that undermines the security posture of organizations relying on this document management platform. This weakness allows unauthorized users to exploit incorrectly configured access control security levels, potentially gaining access to sensitive documents and system functionalities that should be restricted to authorized personnel only. The vulnerability stems from improper implementation of authorization checks within the application's security framework, creating pathways for privilege escalation and data breaches.
The technical flaw manifests through insufficient validation of user permissions and roles during critical operations within the Woffice platform. When users attempt to access specific documents or perform administrative functions, the system fails to properly verify whether the requesting entity possesses adequate authorization levels. This misconfiguration creates a scenario where malicious actors can bypass normal access controls by manipulating request parameters or exploiting predictable access patterns. The vulnerability operates at the application layer and affects the core authentication and authorization mechanisms that govern user interactions with the platform's document repository and management features.
From an operational impact perspective, this Missing Authorization vulnerability poses significant risks to organizations using WofficeIO Woffice versions prior to 5.4.33. Attackers can exploit this weakness to access confidential business documents, sensitive employee records, financial data, or proprietary information stored within the system. The implications extend beyond simple unauthorized access, as compromised accounts could lead to full system compromise through privilege escalation techniques. Organizations may experience regulatory compliance violations, financial losses, reputation damage, and potential legal consequences due to unauthorized data exposure.
The vulnerability aligns with CWE-285, which specifically addresses Improper Authorization issues in software systems, and maps to ATT&CK technique T1078 for Valid Accounts and T1486 for Data Encrypted for Ransom. Organizations should implement immediate mitigations including updating to Woffice version 5.4.33 or later, conducting comprehensive access control reviews, implementing role-based access controls with least privilege principles, and performing regular security audits of authorization mechanisms. Additionally, network segmentation, monitoring for anomalous access patterns, and user behavior analytics should be deployed to detect and prevent exploitation attempts.
Security teams must prioritize this vulnerability as high-risk due to its potential for widespread impact across the organization's document management infrastructure. The fix typically involves implementing robust authorization checks at every interaction point, ensuring that all user requests are properly validated against defined permission sets before granting access. Organizations should also establish incident response procedures specifically addressing access control breaches and conduct regular penetration testing to verify the effectiveness of implemented controls. Regular security awareness training for administrators and users can help prevent exploitation through social engineering or credential compromise techniques.
The remediation process requires careful attention to ensure that authorization logic is properly enforced throughout the application's architecture, with particular focus on API endpoints and document access mechanisms. System administrators should review all existing user roles and permissions, eliminate unnecessary access rights, and implement automated monitoring for suspicious access patterns that may indicate exploitation attempts. The updated Woffice version 5.4.33 includes necessary patches to address this vulnerability and restore proper authorization controls within the platform's security framework.
Organizations relying on WofficeIO Woffice should consider this vulnerability as part of their broader cybersecurity risk assessment, evaluating related threats such as data exfiltration, insider threats, and compliance violations. The incident response plan should include specific procedures for identifying compromised accounts, revoking unauthorized access, and conducting forensic analysis to determine the full scope of any potential exploitation. Regular security assessments and penetration testing will help ensure that similar authorization flaws do not exist in other parts of the organization's technology infrastructure.
Implementation of proper access control measures should follow established security frameworks such as NIST SP 800-53 and ISO/IEC 27001, ensuring that authorization mechanisms meet industry standards for protecting sensitive information. The vulnerability serves as a reminder of the critical importance of maintaining robust access control systems and regularly updating security configurations to address emerging threats in the evolving cybersecurity landscape.