CVE-2026-40973

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.

Affected products

Spring Boot

Vmware Spring Boot

< 2.7.33, 3.3.19, 3.4.16, 3.5.14, 4.0.6

Fix

Available

CVSS 3.1

7.0 HIGH

EPSS

0.1% (3th percentile)

Weakness

CWE-377

NVD status

Analyzed

Published

2026-04-27

No exploit for CVE-2026-40973 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.