Spring Security Advisories

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Unbounded decompression of attacker-supplied compressed message bodies

MEDIUM | AUGUST 20, 2026 | CVE-2026-47860

Description

An attacker who can publish to a queue consumed by an application that has enabled message decompression can crash the consumer JVM with a single ~1 MB message. The default JavaLangErrorHandler calls System.exit(99) on OutOfMemoryError, so the entire application terminates; combined with redelivery on restart, one poison message can crash-loop the service until an operator manually purges it.

Affected Spring Products and Versions

Spring AMQP:

  • 4.1.0 - 4.1.0
  • 4.0.0 - 4.0.4
  • 3.2.0 - 3.2.12
  • 2.4.18 and earlier

Mitigation

Users of affected versions should upgrade to the corresponding fixed version.
Fix versionAvailability
4.1.0.1Enterprise Support Only
4.1.1OSS
4.0.4.1Enterprise Support Only
4.0.5OSS
3.2.13Enterprise Support Only
2.4.19Enterprise Support Only

No further mitigation steps are necessary.

Credit

The issue was identified and responsibly reported by Rong Sun.

References

History

  • 2026-08-20: 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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