CVE-2026-47860Network attack vector

JVM crash via unbounded compressed-message expansion

Published Aug 26, 2026 · Updated Aug 27, 2026

Improper handling of compressed messages in Spring AMQP allows remote authenticated users to crash the consumer JVM through queue input. The message-decompression path expands a roughly 1 MB attacker-supplied body without an output bound, exhausts heap, and raises OutOfMemoryError. Reachability requires queue-publishing access and enabled message decompression; the default JavaLangErrorHandler exits with status 99, and redelivery can crash-loop the service.

CVSS severity6.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper handling of compressed messages in Spring AMQP allows remote authenticated users to crash the consumer JVM through queue input. The message-decompression path expands a roughly 1 MB attacker-supplied body without an output bound, exhausts heap, and raises OutOfMemoryError. Reachability requires queue-publishing access and enabled message decompression; the default JavaLangErrorHandler exits with status 99, and redelivery can crash-loop the service.

The record

CVE
CVE-2026-47860
Published
Aug 26, 2026
Updated
Aug 27, 2026
Vendor
Spring
Product
Spring AMQP
Classifications
CWE-409, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.4.18
  2. Affected versionversion=3.2.0 <=3.2.12
  3. Affected versionversion=4.0.0 <=4.0.4
  4. Affected versionversion=4.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Spring · Spring AMQPversion=0 <=2.4.18; version=3.2.0 <=3.2.12; version=4.0.0 <=4.0.4; version=4.1.0

Published CVSS scores

6.5VMwareCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-409Improper Handling of Highly Compressed Data (Data Amplification, Decompression Bomb)
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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