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CVE-2026-67406

RabbitMQ: Federation and Shovel Gen-Servers Lack format_status Callback — Plaintext Credentials Exposed in Crash Dumps and sys:get_status

4.6 MediumFix available

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.3.3, 4.2.9, 4.1.14, and 4.0.23, Shovel does not format state logged by the crash reporter and can leave unencrypted credentials in a crash dump file. the shovel worker genserver processes does not implement the formatstatus/2 callback. When these processes crash (e.g., due to network partitions, connection failures), the OTP SASL error handler writes the full process state , including plaintext AMQP passwords and URIs , to the error log. This is particularly severe for the shovel worker, which stores deobfuscated plaintext URIs (including amqp://user:password@host format) in its genserver state for the entire process Automatic Credential Exposure: Shovel worker crashes (common during network partitions) automatically write plaintext upstream/downstream passwords to error logs No Special Configuration Needed: Unlike DEBUG logging, SASL error reports are always active Broad. This issue is fixed in versions 4.3.3, 4.2.9, 4.1.14, and 4.0.23.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
High
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
None

Exploit likelihood

0.34%Up 0.1 points since Sep 26, 2026
90%50%10%1%

What each source reports

CVE List Score used 4.6

RabbitMQ: Federation and Shovel Gen-Servers Lack format_status Callback — Plaintext Credentials Exposed in Crash Dumps and sys:get_status

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.3.3, 4.2.9, 4.1.14, and 4.0.23, Shovel does not format state logged by the crash reporter and can leave unencrypted credentials in a crash dump file. the shovel worker genserver processes does not implement the formatstatus/2 callback. When these processes crash (e.g., due to network partitions, connection failures), the OTP SASL error handler writes the full process state , including plaintext AMQP passwords and URIs , to the error log. This is particularly severe for the shovel worker, which stores deobfuscated plaintext URIs (including amqp://user:password@host format) in its genserver state for the entire process Automatic Credential Exposure: Shovel worker crashes (common during network partitions) automatically write plaintext upstream/downstream passwords to error logs No Special Configuration Needed: Unlike DEBUG logging, SASL error reports are always active Broad. This issue is fixed in versions 4.3.3, 4.2.9, 4.1.14, and 4.0.23.

Record
CVE-2026-67406
CVSS 4.0
4.6 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
Weakness
CWE-200
Updated
2026-11-02
EUVDEUVD-2026-87240 4.6

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.3.3, 4.2.9, 4.1.14, and 4.0.23, Shovel does not format state logged by the crash reporter and can leave unencrypted credentials in a crash dump file. the shovel worker genserver processes does not implement the formatstatus/2 callback. When these processes crash (e.g., due to network partitions, connection failures), the OTP SASL error handler writes the full process state , including plaintext AMQP passwords and URIs , to the error log. This is particularly severe for the shovel worker, which stores deobfuscated plaintext URIs (including amqp://user:password@host format) in its genserver state for the entire process Automatic Credential Exposure: Shovel worker crashes (common during network partitions) automatically write plaintext upstream/downstream passwords to error logs No Special Configuration Needed: Unlike DEBUG logging, SASL error reports are always active Broad. This issue is fixed in versions 4.3.3, 4.2.9, 4.1.14, and 4.0.23.

Record
EUVD-2026-87240
CVSS 4.0
4.6 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
Updated
2026-11-02
NVD 4.6

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.3.3, 4.2.9, 4.1.14, and 4.0.23, Shovel does not format state logged by the crash reporter and can leave unencrypted credentials in a crash dump file. the shovel worker genserver processes does not implement the formatstatus/2 callback. When these processes crash (e.g., due to network partitions, connection failures), the OTP SASL error handler writes the full process state , including plaintext AMQP passwords and URIs , to the error log. This is particularly severe for the shovel worker, which stores deobfuscated plaintext URIs (including amqp://user:password@host format) in its genserver state for the entire process Automatic Credential Exposure: Shovel worker crashes (common during network partitions) automatically write plaintext upstream/downstream passwords to error logs No Special Configuration Needed: Unlike DEBUG logging, SASL error reports are always active Broad. This issue is fixed in versions 4.3.3, 4.2.9, 4.1.14, and 4.0.23.

Record
CVE-2026-67406
CVSS 4.0
4.6 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-200
Updated
2026-11-02
OSV 4.6

RabbitMQ: Federation and Shovel Gen-Servers Lack format_status Callback — Plaintext Credentials Exposed in Crash Dumps and sys:get_status

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.3.3, 4.2.9, 4.1.14, and 4.0.23, Shovel does not format state logged by the crash reporter and can leave unencrypted credentials in a crash dump file. the shovel worker genserver processes does not implement the formatstatus/2 callback. When these processes crash (e.g., due to network partitions, connection failures), the OTP SASL error handler writes the full process state , including plaintext AMQP passwords and URIs , to the error log. This is particularly severe for the shovel worker, which stores deobfuscated plaintext URIs (including amqp://user:password@host format) in its genserver state for the entire process Automatic Credential Exposure: Shovel worker crashes (common during network partitions) automatically write plaintext upstream/downstream passwords to error logs No Special Configuration Needed: Unlike DEBUG logging, SASL error reports are always active Broad. This issue is fixed in versions 4.3.3, 4.2.9, 4.1.14, and 4.0.23.

Record
CVE-2026-67406
CVSS 4.0
4.6 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
Weakness
CWE-200
Updated
2026-11-02
OSVDEBIAN-CVE-2026-67406 6.5

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.3.3, 4.2.9, 4.1.14, and 4.0.23, Shovel does not format state logged by the crash reporter and can leave unencrypted credentials in a crash dump file. the shovel worker genserver processes does not implement the formatstatus/2 callback. When these processes crash (e.g., due to network partitions, connection failures), the OTP SASL error handler writes the full process state , including plaintext AMQP passwords and URIs , to the error log. This is particularly severe for the shovel worker, which stores deobfuscated plaintext URIs (including amqp://user:password@host format) in its genserver state for the entire process Automatic Credential Exposure: Shovel worker crashes (common during network partitions) automatically write plaintext upstream/downstream passwords to error logs No Special Configuration Needed: Unlike DEBUG logging, SASL error reports are always active Broad. This issue is fixed in versions 4.3.3, 4.2.9, 4.1.14, and 4.0.23.

Record
DEBIAN-CVE-2026-67406
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVRHSA-2026:67552 8.7

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Record
RHSA-2026:67552
CVSS 3.1
8.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2026-67406 4.6

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.3.3, 4.2.9, 4.1.14, and 4.0.23, Shovel does not format state logged by the crash reporter and can leave unencrypted credentials in a crash dump file. the shovel worker genserver processes does not implement the formatstatus/2 callback. When these processes crash (e.g., due to network partitions, connection failures), the OTP SASL error handler writes the full process state , including plaintext AMQP passwords and URIs , to the error log. This is particularly severe for the shovel worker, which stores deobfuscated plaintext URIs (including amqp://user:password@host format) in its genserver state for the entire process Automatic Credential Exposure: Shovel worker crashes (common during network partitions) automatically write plaintext upstream/downstream passwords to error logs No Special Configuration Needed: Unlike DEBUG logging, SASL error reports are always active Broad. This issue is fixed in versions 4.3.3, 4.2.9, 4.1.14, and 4.0.23.

Record
UBUNTU-CVE-2026-67406
CVSS 4.0
4.6 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Updated
2026-11-02
OSVAZL-105768 No score

CVE-2026-67406 affecting package rabbitmq-server 3.13.7-9

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.3.3, 4.2.9, 4.1.14, and 4.0.23, Shovel does not format state logged by the crash reporter and can leave unencrypted credentials in a crash dump file. the shovel worker genserver processes does not implement the formatstatus/2 callback. When these processes crash (e.g., due to network partitions, connection failures), the OTP SASL error handler writes the full process state , including plaintext AMQP passwords and URIs , to the error log. This is particularly severe for the shovel worker, which stores deobfuscated plaintext URIs (including amqp://user:password@host format) in its genserver state for the entire process Automatic Credential Exposure: Shovel worker crashes (common during network partitions) automatically write plaintext upstream/downstream passwords to error logs No Special Configuration Needed: Unlike DEBUG logging, SASL error reports are always active Broad. This issue is fixed in versions 4.3.3, 4.2.9, 4.1.14, and 4.0.23.

Record
AZL-105768
Updated
2026-11-02
OSVBIT-rabbitmq-2026-67406 No score

RabbitMQ: Federation and Shovel Gen-Servers Lack format_status Callback — Plaintext Credentials Exposed in Crash Dumps and sys:get_status

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.3.3, 4.2.9, 4.1.14, and 4.0.23, Shovel does not format state logged by the crash reporter and can leave unencrypted credentials in a crash dump file. the shovel worker genserver processes does not implement the formatstatus/2 callback. When these processes crash (e.g., due to network partitions, connection failures), the OTP SASL error handler writes the full process state , including plaintext AMQP passwords and URIs , to the error log. This is particularly severe for the shovel worker, which stores deobfuscated plaintext URIs (including amqp://user:password@host format) in its genserver state for the entire process Automatic Credential Exposure: Shovel worker crashes (common during network partitions) automatically write plaintext upstream/downstream passwords to error logs No Special Configuration Needed: Unlike DEBUG logging, SASL error reports are always active Broad. This issue is fixed in versions 4.3.3, 4.2.9, 4.1.14, and 4.0.23.

Record
BIT-rabbitmq-2026-67406
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
rabbitmq-server
Azure Linux:3
through 3.13.7-9 None known
rabbitmq
Bitnami
4.0.0 up to 4.0.23, 4.1.0 up to 4.1.14, 4.2.0 up to 4.2.9, 4.3.0 up to 4.3.3
4.0.234.1.144.2.94.3.3
rabbitmq-server
Debian:12
All versions, plus listed versions
3.10.8-1.13.10.8-1.1+deb12u13.10.8-23.10.8-33.10.8-4
Show 24 moreShow less
3.12.1-13.12.1-1.14.0.5-14.0.5-104.0.5-114.0.5-124.0.5-134.0.5-144.0.5-24.0.5-34.0.5-44.0.5-54.0.5-64.0.5-84.0.5-94.3.0-14.3.0-24.3.0-34.3.2-14.3.2-24.3.2-34.3.2-44.3.2-54.3.6-1
None known
rabbitmq-server
Debian:13
All versions, plus listed versions
4.0.5-104.0.5-114.0.5-124.0.5-134.0.5-14
Show 14 moreShow less
4.0.5-64.0.5-6+deb13u14.0.5-6+deb13u24.0.5-84.0.5-94.3.0-14.3.0-24.3.0-34.3.2-14.3.2-24.3.2-34.3.2-44.3.2-54.3.6-1
None known
rabbitmq-server
Debian:14
before 4.3.6-1, plus listed versions
4.0.5-104.0.5-114.0.5-124.0.5-134.0.5-14
Show 11 moreShow less
4.0.5-64.0.5-84.0.5-94.3.0-14.3.0-24.3.0-34.3.2-14.3.2-24.3.2-34.3.2-44.3.2-5
4.3.6-1
rabbitmq-server4.3
Red Hat:hummingbird:1
From an advisory covering 54 CVEs
before 0:4.3.6-1.hum1
0:4.3.6-1.hum1
rabbitmq-server
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
3.5.4-13.5.4-33.5.4-3.13.5.7-13.5.7-1ubuntu0.16.04.1
Show 5 moreShow less
3.5.7-1ubuntu0.16.04.23.5.7-1ubuntu0.16.04.43.5.7-1ubuntu0.16.04.4+esm13.5.7-1ubuntu0.16.04.4+esm23.5.7-1ubuntu0.16.04.4+esm3
None known
rabbitmq-server
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
3.6.10-13.6.10-1ubuntu0.13.6.10-1ubuntu0.33.6.10-1ubuntu0.43.6.10-1ubuntu0.53.6.10-1ubuntu0.5+esm1
None known
rabbitmq-server
Ubuntu:Pro:20.04:LTS
All versions, plus listed versions
3.7.8-4ubuntu23.7.18-13.8.2-0ubuntu13.8.2-0ubuntu1.13.8.2-0ubuntu1.2
Show 8 moreShow less
3.8.2-0ubuntu1.33.8.2-0ubuntu1.43.8.2-0ubuntu1.53.8.3-0ubuntu0.13.8.3-0ubuntu0.23.8.3-0ubuntu0.33.8.3-0ubuntu0.3+esm13.8.3-0ubuntu0.3+esm2
None known
rabbitmq-server
Ubuntu:22.04:LTS
All versions, plus listed versions
3.8.9-3ubuntu13.9.8-13.9.8-23.9.8-33.9.8-5
Show 8 moreShow less
3.9.8-63.9.13-13.9.13-1ubuntu0.22.04.13.9.13-1ubuntu0.22.04.23.9.27-0ubuntu0.13.9.27-0ubuntu0.23.9.27-0ubuntu0.53.9.27-0ubuntu0.6
None known
rabbitmq-server
Ubuntu:24.04:LTS
All versions, plus listed versions
3.12.1-13.12.1-1ubuntu13.12.1-1ubuntu1.23.12.1-1ubuntu1.43.12.1-1ubuntu1.63.12.1-1ubuntu1.7
None known
rabbitmq-server
Ubuntu:26.10
All versions, plus listed versions
4.0.5-10ubuntu54.3.2-4ubuntu24.3.2-4ubuntu3
None known
rabbitmq-server
Ubuntu:26.04:LTS
All versions, plus listed versions
4.0.5-8ubuntu24.0.5-10ubuntu14.0.5-10ubuntu24.0.5-10ubuntu34.0.5-10ubuntu44.0.5-10ubuntu54.0.5-10ubuntu5.14.0.5-10ubuntu5.2
None known

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-67406 is a medium vulnerability (CVSS 4.6) in Broadcom Rabbitmq Server, published September 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.34%, the 27th percentile. Fixed in rabbitmq 4.0.23.

References

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