Update dependency org.springframework.boot:spring-boot-devtools to v4.0.6 [SECURITY] (master)

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This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.springframework.boot:spring-boot-devtools (source)	4.0.0-M1 → 4.0.6

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Spring Boot DevTools remote secret comparison is vulnerable to timing attacks

CVE-2026-40972 / GHSA-56v8-86gj-66jp

More information

Details

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.

Severity

• CVSS Score: 7.5 / 10 (High)
• Vector String: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

• https://nvd.nist.gov/vuln/detail/CVE-2026-40972
• https://spring.io/security/cve-2026-40972
• https://github.com/advisories/GHSA-56v8-86gj-66jp

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

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