CVE-2026-40977 MEDIUM

CVE-2026-40977

Vendor Spring
Product Spring Boot
Weakness CWE-59
Published April 27, 2026
Last update April 28, 2026

CVSS base score

4.7/10
Attack vector Local
Attack complexity High
Privileges required High
User interaction None
Confidentiality None
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 27, 2026 CVE published
April 28, 2026 Record updated