CVE-2026-59327 in Tools for Eclipse
Summary
by MITRE • 07/30/2026
Spring Tools for Eclipse stores the Spring Boot DevTools remote secret (spring.devtools.remote.secret) as a plain string attribute on the "Spring Boot DevTools Client" launch configuration. Eclipse persists launch configuration attributes as cleartext XML, either to workspace metadata or, if the user marks the configuration as a shared file, directly into the project tree where it can be committed to version control. This secret is the sole credential protecting the DevTools remote restart/reload endpoint, which accepts and executes arbitrary class bytes on the target application. Anyone able to read the .launch file (via filesystem access, a workspace backup, or a shared VCS repository) can extract the secret and use it to achieve remote code execution against the associated Spring Boot application. Affected Spring Products and Versions: Spring Tools for Eclipse: 5.2.0 and earlier
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Analysis
by VulDB Data Team • 07/30/2026
The vulnerability identified in Spring Tools for Eclipse represents a critical security flaw that undermines the integrity of Spring Boot applications through improper credential handling within the development environment. This issue specifically affects the Spring Boot DevTools remote secret management mechanism, where the secret used to authenticate remote restart and reload operations is stored in plaintext format within Eclipse launch configuration files. The flaw exists because Eclipse persistently stores these configuration attributes as cleartext xml data, either within workspace metadata or directly in project directories when marked as shared, creating a persistent exposure vector that extends beyond the development environment itself.
The technical implementation of this vulnerability stems from the insecure storage pattern where sensitive authentication credentials are not encrypted or obfuscated during persistence. The spring.devtools.remote.secret attribute serves as the sole authentication mechanism protecting the DevTools remote endpoint, which operates with elevated privileges and accepts arbitrary class bytes for execution. This design creates a direct path to remote code execution when the secret is exposed through any means that grants access to the .launch configuration files. The vulnerability operates at the intersection of improper credential storage and insecure application deployment practices, where development artifacts inadvertently become attack vectors against production systems.
The operational impact of this vulnerability extends far beyond simple credential exposure, as it provides attackers with complete control over affected Spring Boot applications through remote code execution capabilities. An attacker who gains access to the .launch file can extract the secret and immediately utilize it to perform remote restarts, reload operations, and execute arbitrary code on target applications. This threat landscape is particularly concerning because it allows for lateral movement within development environments and potential compromise of production systems if development configurations are improperly shared or committed to version control repositories. The vulnerability affects all versions of Spring Tools for Eclipse up to and including 5.2.0, representing a widespread exposure across numerous development teams utilizing these tools.
Mitigation strategies must address both the immediate exposure through cleartext storage and establish proper credential handling practices within development environments. Organizations should immediately update to Spring Tools for Eclipse version 5.2.1 or later where this vulnerability has been resolved. The recommended approach involves implementing secure credential management through encrypted storage mechanisms, establishing proper access controls on workspace metadata and project files, and conducting regular security audits of configuration files within version control systems. Additionally, development teams should adopt secure coding practices that prevent sensitive information from being committed to source repositories, utilizing environment-specific configuration files and secure credential management tools. This vulnerability aligns with CWE-312 (Cleartext Storage of Sensitive Information) and represents a significant concern under ATT&CK framework domain of Execution and Privilege Escalation through insecure development practices. Organizations must also consider implementing automated scanning solutions to detect exposed credentials in version control systems and establish policies for regular credential rotation within development environments to minimize the attack surface and prevent exploitation of similar vulnerabilities in the future.