Predictable from Observable State Affecting spring-boot package, versions *


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.01% (1st percentile)

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  • Snyk IDSNYK-RHEL7-SPRINGBOOT-16540657
  • published8 May 2026
  • disclosed27 Apr 2026

Introduced: 27 Apr 2026

CVE-2026-40973  (opens in a new tab)
CWE-341  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 spring-boot.

NVD Description

Note: Versions mentioned in the description apply only to the upstream spring-boot package and not the spring-boot package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1