Full Report
Spring security advisory (AV26-574)
Analysis Summary
# Vulnerability: Multiple Vulnerabilities Across Spring Ecosystem (AV26-574)
## CVE Details
*Note: The provided advisory acts as a consolidated bulletin (AV26-574). Specific CVE IDs and CVSS scores are distributed across the individual project advisories released between June 9 and 10, 2026.*
- **CVE ID:** Multiple (Refer to Spring Security Advisory portal for specific identifiers)
- **CVSS Score:** Variable (Ranging from Medium to Critical)
- **CWE:** Commonly includes CWE-502 (Deserialization), CWE-79 (XSS), and CWE-917 (Expression Language Injection) in these ecosystems.
## Affected Systems
- **Products:**
- Spring AMQP
- Spring Authorization Server
- Spring Web Services
- Spring Web Flow
- Spring REST Docs
- Spring Data (Commons, MongoDB, JDBC, KeyValue, R2DBC, Redis, REST, Relational)
- Spring Security
- Spring for Apache Kafka / Apache Pulsar
- **Versions:** Multiple versions are affected. Generally includes the current unsupported branches and legacy versions of the listed frameworks.
- **Configurations:** Systems utilizing transitive dependencies through `Spring Data Commons` are broadly affected across all data store modules.
## Vulnerability Description
This advisory covers a wide-scale security update across the Spring ecosystem. Technical flaws likely involve:
1. **Improper Validation:** Potential for remote code execution or unauthorized data access through Spring Data modules.
2. **Logic Flaws:** Vulnerabilities in Spring Authorization Server that could lead to token bypass or privilege escalation.
3. **Messaging Vulnerabilities:** Potential denial of service or injection flaws in Spring for Apache Kafka/Pulsar and Spring AMQP.
## Exploitation
- **Status:** PoC availability varies by specific CVE; updates are proactive to prevent exploitation.
- **Complexity:** Low to Medium.
- **Attack Vector:** Primarily Network (Remote).
## Impact
- **Confidentiality:** High (Potential unauthorized access to backend data stores).
- **Integrity:** High (Potential for data manipulation or unauthorized execution).
- **Availability:** Medium to High (Potential for service disruption via DoS).
## Remediation
### Patches
Users are advised to upgrade to the following (or newer) versions immediately:
- **Spring AMQP:** Update to latest patched version (e.g., 3.x.x).
- **Spring Security:** Update to latest stable releases (e.g., 6.x.x, 5.8.x).
- **Spring Data:** Ensure `Spring Data Commons` and associated store modules are aligned with the June 2026 release train.
- **Spring Authorization Server:** Update to latest minor/patch version.
### Workarounds
- Ensure all input validation is strictly enforced at the application layer.
- Minimize exposure of management endpoints (e.g., Actuator).
- Filter untrusted serialized objects if using AMQP or Data modules.
## Detection
- **Indicators of Compromise:** Unusual outbound network traffic from Spring Boot applications; unexpected entries in application logs indicating failed authentication or malformed serialization headers.
- **Detection methods:** Use Software Composition Analysis (SCA) tools to identify vulnerable versions of JAR files within the CI/CD pipeline.
## References
- Spring Security Advisories: hxxps[://]spring[.]io/security
- Canadian Centre for Cyber Security Advisory (AV26-574): hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/spring-security-advisory-av26-574