CVE-2026-40977

State: Published
Severity: 4.7 Medium
Published: Apr 27, 2026
Updated: Apr 28, 2026
Reserved: Apr 16, 2026

Description

When an application is configured to use `ApplicationPidFileWriter`, a local attacker with write access to the PID file's location can corrupt one file on the host each time the application is started.

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); PID file / symlink behavior (`ApplicationPidFileWriter`). Versions that are no longer supported are also affected per vendor advisory.

Scores

CVSS	Score	Vector	Source
3.1	4.7 Medium	CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H	vmware

Weaknesses

CWE-59 Improper Link Resolution Before File Access

Affected Products

Product	Versions
Spring BootSpring	4.0.0 to before 4.0.6Affected 3.5.0 to before 3.5.14Affected 3.4.0 to before 3.4.16Affected 3.3.0 to before 3.3.19Affected 2.7.0 to before 2.7.33Affected

References

https://spring.io/security/cve-2026-40977

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