CVE-2025-41248 is a high-severity vulnerability in Spring Security that allows for an authorization bypass due to issues with the annotation detection mechanism. This vulnerability arises when using method security annotations, specifically on methods within type hierarchies with a parameterized super type that employs unbounded generics. The severity level is rated at 7.5 on the CVSS scale, indicating a significant risk to affected applications.
Organizations that utilize Spring Security's @EnableMethodSecurity feature are particularly at risk. However, those not using this feature or avoiding security annotations on methods within generic superclasses or interfaces are not affected. The potential for exploitation of this vulnerability presents a notable concern for applications relying on Spring Security.
The urgency for defenders is clear. Organizations should prioritize patching immediately to mitigate the risk associated with this vulnerability. Given the high exploitability score and the potential for unauthorized access, swift action is necessary to ensure application security.
The CVE was published on September 16, 2025, and is categorized under CWE-289, which pertains to authorization bypass issues. Security teams should remain vigilant and ensure that their applications are fortified against this vulnerability to prevent potential breaches.
Vulnerability Details
The Spring Security annotation detection mechanism may not correctly resolve annotations on methods within type hierarchies with a parameterized super type with unbounded generics. This leads to potential authorization bypass when using @PreAuthorize and related method security annotations.
The CVSS score for this vulnerability is 7.5, indicating a high severity level due to the significant impact on confidentiality with a high confidentiality impact and no integrity or availability impact. The vulnerability affects applications that utilize Spring Security's method security features.
Technical Analysis
The root cause of this vulnerability stems from the way Spring Security processes annotations, particularly in the context of generics. When methods are defined in generic superclasses or interfaces, the security annotations may not be resolved correctly, leading to potential unauthorized access.
The attack vector for this vulnerability is network-based, with a low complexity level for potential exploitation. No privileges are required to exploit this vulnerability, and user interaction is not necessary. As a result, the risk to confidentiality is high, while the integrity and availability of the system remain unaffected.
Risk & Impact Analysis
The risk to organizations includes potential unauthorized access to sensitive data if the vulnerability is exploited. Given the high severity rating, organizations that fail to address this vulnerability may face significant security breaches. The blast radius for this vulnerability can extend to all applications utilizing affected Spring Security configurations.
Organizations should assess the urgency based on the CVSS score and prioritize remediation efforts in their patch cycle. The exploitation status of this vulnerability indicates a high potential for impact, further emphasizing the need for immediate action.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch are potentially affected by this vulnerability. Organizations should ensure they are using the latest version of Spring Security.
Mitigation & Remediation
Organizations should prioritize patching immediately. Ensure that your Spring Security installations are updated to the latest version that addresses this vulnerability. If an immediate patch is not available, consider disabling the @EnableMethodSecurity feature until a fix can be applied.
In addition to applying patches, organizations should consider implementing additional mechanisms to validate authorization on methods within generic superclasses to mitigate potential bypass risks.
Detection Guidance
Security teams should monitor application logs for unusual access patterns that may indicate unauthorized access due to this vulnerability. Additionally, behavioral anomalies in user activity, especially around method invocations secured by annotations, should be scrutinized.
Implementing network signatures that identify access to methods using @PreAuthorize annotations could help in detecting potential exploitation attempts.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-41248 lies in its illustration of the challenges posed by complex type hierarchies in security annotations. As applications evolve, maintaining robust security mechanisms becomes increasingly critical.
This vulnerability highlights the importance of regular code reviews and security assessments, particularly in the context of evolving frameworks like Spring Security.
Security teams should focus on developing a comprehensive understanding of the security features in use within their applications, ensuring that they are equipped to identify and mitigate potential vulnerabilities.
Continuous security testing can play a critical role in identifying such vulnerabilities before they can be exploited.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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