How many CVEs have patched check_user_loopback?

2 published CVEs changed check_user_loopback in rabbitmq/rabbitmq-server, in 4 distinct patches totalling 3 changed lines, between 2026 and 2026.

What is the latest CVE that changed check_user_loopback?

CVE-2026-57216 (RabbitMQ: AMQP 1.0, AMQP 0-9-1, Stream Protocol loopback enforcement can lead to remote guest sessions due to listener-address loopback checks), published 2026-07-10, changed lines 1412 of deps/rabbitmq_stream/src/rabbit_stream_reader.erl.

How does check_user_loopback compare to the rest of rabbitmq/rabbitmq-server?

rabbitmq/rabbitmq-server has 39 CVEs with a located fix in total; 2 of them changed check_user_loopback.

What do the line numbers refer to?

Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

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Rabbitmq Server
Check_user_loopback

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Patched Functions
Rabbitmq
Rabbitmq Server
Check_user_loopback

check_user_loopback in rabbitmq/rabbitmq-server: Patched by 2 CVEs

rabbitmq/rabbitmq-server

Function

check_user_loopback

Name: check_user_loopback in rabbitmq/rabbitmq-server: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

deps/rabbitmq_stream/src/rabbit_stream_reader.erl

Last patched July 10, 2026

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

check_user_loopback in rabbitmq/rabbitmq-server was changed by 2 published CVE fixes in 2026, in 4 distinct patches that added or removed 3 lines in total.

rabbitmq/rabbitmq-server has 39 CVEs with a located fix in total, so 5% of them touched this function.

CVEs that patched it

Every published CVE whose fix changed check_user_loopback, newest first, with the lines each fix touched.

RabbitMQ: AMQP 1.0, AMQP 0-9-1, Stream Protocol loopback enforcement can lead to remote guest sessions due to listener-address loopback checks
CVE-2026-57216 · line 1412 · +1 −1
Critical · CVSS 10.0
EPSS 0.5%2026-07-10
RabbitMQ: Stream listener does not enforce configured frame-size limit during authentication, permitting unauth'd mem-exhaust DoS
CVE-2026-57220 · line 1412 · +1 −0
High · CVSS 7.5
EPSS 0.5%2026-07-10

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Other functions in these files

Functions in the same file that CVE fixes also changed.

1handshakedeps/rabbitmq_stream/src/rabbit_stream_reader.erl1 CVEs · 2 patches2026

Other hotspots in the repository

Functions in rabbitmq/rabbitmq-server changed by the most CVE fixes.

dispatcher4 CVEs · deps/rabbitmq_management/src/rabbit_mgmt_dispatcher.erl websocket_init2 CVEs · deps/rabbitmq_web_stomp/src/rabbit_web_stomp_handler.erl load_init_data2 CVEs · deps/rabbitmq_management/priv/www/js/main.js setup_global_vars2 CVEs · deps/rabbitmq_management/priv/www/js/global.js update_cluster_name_ui2 CVEs · deps/rabbitmq_management/priv/www/js/global.js load_init_data_and_ui2 CVEs · deps/rabbitmq_management/priv/www/js/main.js

All patched functions in rabbitmq/rabbitmq-server

Frequently asked questions

Common questions about CVE fixes to check_user_loopback.

How many CVEs have patched check_user_loopback?: 2 published CVEs changed check_user_loopback in rabbitmq/rabbitmq-server, in 4 distinct patches totalling 3 changed lines, between 2026 and 2026.
What is the latest CVE that changed check_user_loopback?: CVE-2026-57216 (RabbitMQ: AMQP 1.0, AMQP 0-9-1, Stream Protocol loopback enforcement can lead to remote guest sessions due to listener-address loopback checks), published 2026-07-10, changed lines 1412 of deps/rabbitmq_stream/src/rabbit_stream_reader.erl.
How does check_user_loopback compare to the rest of rabbitmq/rabbitmq-server?: rabbitmq/rabbitmq-server has 39 CVEs with a located fix in total; 2 of them changed check_user_loopback.
What do the line numbers refer to?: Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

References

deps/rabbitmq_stream/src/rabbit_stream_reader.erl on GitHub (opens in a new tab)
All patched functions in rabbitmq/rabbitmq-server
Patched functions directory

Fix locations are computed by RadicalNotion.AI from the upstream patch diff of each CVE. CVE data is sourced from the CVE Program.

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Overview
CVEs that patched it
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FAQ
References