A vulnerability was discovered in Argo CD, a declarative, GitOps continuous delivery tool for Kubernetes. This vulnerability allows exposure of sensitive secret values in error messages and the diff view when an invalid Kubernetes Secret resource is synced from a repository. The risk to organizations includes unauthorized access to sensitive secret data, potentially leading to further exploitation within the Kubernetes environment.
The vulnerability has a CVSS score of 6.8, indicating medium severity. Organizations should address this vulnerability as it poses a significant risk due to the confidentiality impact being rated as high. The vulnerability assumes that the user has write access to the repository and can exploit it by committing an invalid Secret to the repository, triggering a Sync operation.
Once exploited, any user with read access to Argo CD can view the exposed secret data. This vulnerability is fixed in versions v2.13.4, v2.12.10, and v2.11.13. Organizations using Argo CD should prioritize patching immediately to mitigate the risk of unauthorized access to sensitive information.
Given the potential for exploitation, it is critical for organizations to assess their current deployment of Argo CD and take appropriate action to ensure that they are running a patched version of the software.
Vulnerability Details
The vulnerability discovered in Argo CD is classified under CWE-200 and CWE-209. It affects versions prior to the patched versions and includes the following critical details:
CVSS Score: 6.8 (Medium) Attack Vector: NETWORK Attack Complexity: LOW Privileges Required: HIGH User Interaction: NONE Confidentiality Impact: HIGH Integrity Impact: NONE Availability Impact: NONE
Technical Analysis
The root cause of this vulnerability stems from improper handling of error messages in Argo CD. When an invalid Kubernetes Secret is synced, the tool fails to adequately scrub sensitive information, leading to exposure in logs and user interfaces.
The attack vector is primarily network-based, with low attack complexity. High privileges are required to exploit this vulnerability, as the attacker must possess write access to the repository. There is no user interaction required for the exploit to occur, making it particularly dangerous in environments where multiple users have varying access levels.
The impact on confidentiality is rated as high, given that sensitive secret data can be exposed to users who may not otherwise have access to it. Integrity and availability impacts are negligible in this case.
Risk & Impact Analysis
The real-world deployment risk associated with this vulnerability is significant. Organizations using Argo CD must consider the potential for unauthorized access to sensitive information, leading to possible data breaches or further exploitation within their Kubernetes environments.
The blast radius of this vulnerability can extend beyond initial exposure, as sensitive secrets may grant access to additional systems and applications. Organizations should assess their current security posture and prioritize this vulnerability in their risk management strategies.
Given the CVSS score of 6.8 and the absence of known exploitation, organizations should address this vulnerability during their priority patch cycle to mitigate risk effectively.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of Argo CD prior to the following fixed versions are affected: v2.13.4, v2.12.10, and v2.11.13.
Mitigation & Remediation
Organizations using Argo CD should prioritize upgrading to the fixed versions: v2.13.4, v2.12.10, or v2.11.13. If immediate patching is not feasible, consider implementing configuration hardening to limit access to sensitive error messages. Regular monitoring of error logs for exposure of secrets is also recommended.
For detailed guidance on validating security measures, organizations can refer to our penetration testing services.
Detection Guidance
Organizations should monitor logs for any instances of sensitive data being displayed in error messages. Additionally, behavioral anomalies in the application that may indicate exploitation attempts should be flagged for further investigation.
AppSecure Threat Intelligence Insight
The discovery of this vulnerability in Argo CD highlights the ongoing importance of secure coding practices, especially when dealing with sensitive information. Security teams should ensure that error handling does not inadvertently expose sensitive data.
As this vulnerability is part of a broader trend of security concerns in cloud-native applications, organizations should stay informed about related vulnerabilities and apply proactive security measures. Regular assessments through application security assessments can help identify weaknesses before they are exploited.
Furthermore, the integration of continuous security practices, such as continuous penetration testing, can aid organizations in mitigating risks associated with vulnerabilities like CVE-2025-23216.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)