CVE-2026-40977 Security Details

CVE ID

CVE-2026-40977

CWE

CWE-59

CVE 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.

Published

Apr 25, 2026

CVSS Score & Severity

6.7Medium

CVSS Vector

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

EPSS Score

0.017%

Malware

malware

KEV Status

Not in KEV Catalog: No known exploits

Vulnerable Methods

org/springframework/boot/ApplicationPid.canWritePosixFile(Ljava/io/File;)Z

JVMVulnerable params: 0

org/springframework/boot/ApplicationPid.write(Ljava/io/File;)V

JVMVulnerable params: 0

org/springframework/boot/system/ApplicationPid.canWritePosixFile(Ljava/nio/file/Path;)Z

JVMVulnerable params: 0

org/springframework/boot/system/ApplicationPid.write(Ljava/io/File;)V

JVMVulnerable params: 0

Affected Ecosystems

affected

Source

National Vulnerability Database

References

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