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High7.0VMware (Broadcom)

High [CVE-2026-40973] Spring Boot: local attacker on the same host as the application may be able to take control of the directory used by `ApplicationTemp`

This high-severity VMware (Broadcom) advisory covers CVE-2026-40973 affecting Spring Boot.

CVE-2026-40973 Published Apr 28, 2026Updated by vendor Jun 17, 2026
CVE-2026-40973
Affected products & platforms
VMware (Broadcom)Tanzu / Spring
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Summary

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 versions
  • 4.0.0
  • 4.0.5
  • 4.0.6
  • 3.5.0
  • 3.5.13
  • 3.5.14
  • 3.4.0
  • 3.4.15
  • 3.4.16
  • 3.3.0
  • 3.3.18
  • 3.3.19
  • 2.7.0
  • 2.7.32
  • 2.7.33

NVD record · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.

NVD record · high-confidence parse· fetched 2 months ago·verify at source

Mitigation

The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.

NVD record · high-confidence parse· fetched 2 months ago·verify at source

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