🛡️ CVE-2026-40972
🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-208 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-208
Public Exploit ✅ No
Source NVD
Published 2026-04-28
Updated 2026-06-15
Modified 2026-05-06
Fix URL N/A

Affected Packages

Software From version Fixed in
org.springframework.boot:spring-boot-devtools — —
spring-boot 4.0.0 4.0.6

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