Spring Boot DevTools remote secret comparison is vulnerable to timing attacks
An attacker on the same network as the remote application may be able to utilize a timing attack to discover information about the remote secret. In extreme circumstances this could result in the attacker determining the secret and uploading changed classes, thereby achieving remote code execution in the remote application.
Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); DevTools remote secret comparison. Versions that are no longer supported are also affected per vendor advisory.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.springframework.boot:spring-boot-devtools | >= 4.0.0, < 4.0.6, >= 3.5.0, < 3.5.14, >= 3.4.0, <= 3.4.15, >= 3.3.0, <= 3.3.18, <= 2.7.32 | 4.0.6, 3.5.14 |
References
- CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-208- Platform
- Java / Kotlin (Maven)
- Package
org.springframework.boot:spring-boot-devtools- Disclosed
- 28.04.2026
- Updated
- 11.10.2026 12:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-56v8-86gj-66jp - CC BY 4.0
Vulnerability history: org.springframework.boot:spring-boot-devtools
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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