CVE-2025-9973 is a medium-severity vulnerability identified in the WSO2 Identity Server. This vulnerability allows unauthorized access due to not validating the organization context when executing adaptive authentication flows. A malicious actor with privileges to configure adaptive authentication within one organization can leverage this functionality to execute authentication logic on other organizations and sub-organizations.
The CVSS score of 6.4 indicates a medium level of risk, primarily due to the attack vector being adjacent network, requiring high privileges for exploitation. Organizations utilizing WSO2 Identity Server in a multi-organization deployment should be particularly vigilant, as this flaw can lead to serious breaches in authorization boundaries.
Risk to organizations includes potential privilege escalation and unauthorized access to user accounts across different organizations. As adaptive authentication becomes a critical control in modern identity management, the implications of this vulnerability necessitate prompt action.
Organizations should prioritize patching immediately. Failure to address this vulnerability may result in significant security incidents.
Vulnerability Details
The vulnerability arises from the WSO2 Identity Server's failure to validate the organization context adequately when executing adaptive authentication flows. The vulnerability was published on 2026-05-11 and has a CVSS v3.1 vector of CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L.
This could allow a malicious actor to trigger authentication logic on unintended organizations, leading to unauthorized access to critical operations and user accounts. The affected systems are currently awaiting analysis, and the vulnerability is classified under CWE-284 (Improper Access Control) and CWE-863 (Authorization Bypass Through User-Controlled Key).
Technical Analysis
The root cause of this vulnerability is the lack of proper organization context validation in the adaptive authentication processes. The attack vector is classified as adjacent network, meaning that the attacker needs to be on the same network segment as the target system. The attack complexity is low, as this vulnerability requires high privileges to exploit but does not necessitate user interaction.
The impact on confidentiality and integrity is high, as unauthorized access can lead to critical operations being performed on behalf of other organizations. However, the availability impact is low, indicating that the system remains operational even when this vulnerability is exploited.
Risk & Impact Analysis
In real-world deployments, the risk associated with this vulnerability is significant. Organizations utilizing the WSO2 Identity Server in multi-organization setups may face unauthorized access to sensitive user accounts and critical operations, potentially resulting in data breaches and loss of customer trust.
The urgency assessment based on the CVSS score suggests that organizations should address this vulnerability in their priority patch cycle. The blast radius of this vulnerability is extensive, as it may affect multiple organizations sharing the same identity server.
Organizations must not only patch the affected systems but also review their configurations to ensure that adaptive authentication is secured against unauthorized access.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
As the specific versions affected by this vulnerability are currently unspecified, organizations should assume that all versions prior to vendor patch are vulnerable.
Mitigation & Remediation
Organizations should validate remediation through penetration testing to identify similar weaknesses. It is important to apply the vendor's patches promptly and review the configuration of adaptive authentication to ensure proper validation of organization context.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor for unusual authentication requests that originate from unexpected organizations. Logging authentication attempts and reviewing access patterns can help identify unauthorized access attempts.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability lies in its representation of the challenges faced in multi-organization identity management. Security teams should learn from this flaw to strengthen their adaptive authentication mechanisms.
Implementing robust validation processes can mitigate the risk of unauthorized access across organizations. For further reading, organizations can refer to our comprehensive penetration testing methodology to enhance their security posture.
This incident serves as a reminder of the importance of regular security assessments and staying informed about vulnerabilities that could impact organizational security.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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