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Fencer Vulns
medium 6.5

CVE-2026-47860 json

Unbounded decompression of attacker-supplied compressed message bodies

published 2026-08-26 2 mo ago modified 2026-09-02 2 mo ago also EUVD-2026-66826

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 36%
public exploits
0
none known

Summary

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. Spring AMQP 4.1.0 Spring AMQP 4.0.0 - 4.0.4 Spring AMQP 3.2.0 - 3.2.12 Spring AMQP 2.4.18 and earlier

Patch / fix

  • vmware spring_advanced_message_queuing_protocol 2.4.19, 3.2.13, 4.0.4.1, 4.1.0.1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-47860 updated cvss 6.5

org.springframework.amqp/spring-amqp: Spring AMQP: Denial of Service via unbounded decompression of compressed messages

  • Red Hat build of Apache Camel 4 for Quarkus 3 spring-amqp 3.2.9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Fuse 7 spring-amqp 3.2.9
    affected: workaround, no fix planned “Out of support scope”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

  • Spring Spring AMQP

Classification

Weakness
  • CWE-835 Loop with Unreachable Exit Condition

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.