Spring Security Advisories

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PID file write follows symlinks at predictable default path

MEDIUM | APRIL 23, 2026 | CVE-2026-40977

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 Products and Versions

Spring Boot:

  • 4.0.0 - 4.0.5
  • 3.5.0 - 3.5.13
  • 3.4.0 - 3.4.15
  • 3.3.0 - 3.3.18
  • 2.7.32 and earlier

Mitigation

Users of affected versions should upgrade to the corresponding fixed version.
Fix versionAvailability
4.0.6OSS
3.5.14OSS
3.4.16Enterprise Support Only
3.3.19Enterprise Support Only
2.7.33Enterprise Support Only

No further mitigation steps are necessary.

References

History

  • 2026-04-23: Initial vulnerability report published.

Reporting a vulnerability

To report a security vulnerability for a project within the Spring portfolio, see the Security Policy

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