CVE-2026-40973_CVE-2026-40973

7 / 10

HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

A local attacker on the same host as the application may be able to take control of the directory used by `ApplicationTemp`. When `server.servlet.session.persistent` is set to `true` and the attack persists across application restarts, this may allow the attacker to read session information and hijack authenticated users or deploy a gadget chain and execute code as the application's user.

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); predictable temp directory / `ApplicationTemp` ownership verification. Versions that are no longer supported are also affected per vendor advisory.

Basic Information

ID CVE-2026-40973

Source vmware

Published Apr 27, 2026 at 23:29

Affected Product

Vendor Spring

Product Spring Boot

Version 4.0.0

Affected Versions Spring Spring Boot 4.0.0
Spring Spring Boot 3.5.0
Spring Spring Boot 3.4.0
Spring Spring Boot 3.3.0
Spring Spring Boot 2.7.0

CWE Classification

CWE-377

References

spring.io /security/cve-2026-40973

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