CVE-2026-15557 in waoowaoo
Summary
by MITRE • 07/13/2026
A weakness has been identified in waooAI waoowaoo up to 0.4.1. Affected by this vulnerability is the function getInternalTaskSession/getAuthSession/requireUserAuth/requireProjectAuth/requireProjectAuthLight in the library src/lib/api-auth.ts of the component Internal Task Header Handler. This manipulation of the argument x-internal-user-id request causes improper authentication. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
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Analysis
by VulDB Data Team • 07/13/2026
This vulnerability resides within the waooAI waoowaoo application version 0.4.1 and earlier, specifically targeting authentication mechanisms in the Internal Task Header Handler component. The flaw manifests through manipulation of the x-internal-user-id request header parameter within critical authentication functions including getInternalTaskSession, getAuthSession, requireUserAuth, requireProjectAuth, and requireProjectAuthLight. The vulnerability represents a direct failure in proper authentication validation where an attacker can craft malicious requests with manipulated user ID values to bypass authentication checks and gain unauthorized access to internal resources. This weakness allows for remote exploitation without requiring physical access or prior authorization, making it particularly dangerous as it can be leveraged from any network location.
The technical implementation of this vulnerability stems from insufficient input validation and authentication logic within the api-auth.ts library file. When these authentication functions process requests containing manipulated x-internal-user-id headers, they fail to properly verify the authenticity of the user identifier against legitimate credentials or session data. This creates an authentication bypass condition where arbitrary user IDs can be accepted as valid, effectively allowing attackers to impersonate any internal user account within the system. The vulnerability's classification aligns with CWE-287 which addresses improper authentication scenarios and CWE-305 which covers authentication bypass through improper implementation of authentication mechanisms. From an attack perspective, this weakness maps directly to ATT&CK technique T1078 which involves valid accounts usage and T1190 which encompasses exploitation of remote services.
The operational impact of this vulnerability extends beyond simple unauthorized access as it provides attackers with potential for privilege escalation and data compromise within the application's internal infrastructure. Attackers could potentially access sensitive project data, manipulate internal task configurations, or perform actions that should be restricted to authorized personnel only. The public availability of exploit code significantly amplifies the risk level, as it removes the requirement for advanced technical skills to leverage this vulnerability. Organizations using affected versions of waooAI waoowaoo face substantial exposure risk, particularly in environments where internal access controls are not properly segregated from external network boundaries.
Mitigation strategies should focus on immediate remediation through version updates to address the core authentication implementation flaws. System administrators should implement network-level controls to restrict access to authentication endpoints and monitor for suspicious header manipulation attempts. The recommended approach includes validating all user identifiers against legitimate credential stores, implementing proper session management with time-based expiration, and establishing robust input sanitization for all authentication parameters. Additional protective measures encompass deploying web application firewalls to detect and block malformed authentication requests, enforcing strict access controls on internal API endpoints, and conducting comprehensive security audits of authentication flows. Organizations should also consider implementing multi-factor authentication mechanisms and regular penetration testing to identify similar weaknesses in their authentication infrastructure. The vulnerability's exposure period without vendor response underscores the importance of proactive security monitoring and independent vulnerability assessment practices for open source components.