How many CVEs have patched mqttDeliverMsgCbQoS12?

1 published CVEs changed mqttDeliverMsgCbQoS12 in nats-io/nats-server, in 2 distinct patches totalling 10 changed lines, between 2026 and 2026.

What is the latest CVE that changed mqttDeliverMsgCbQoS12?

CVE-2026-58209 (NATS Server: MQTT retained and QoS replay bypass subscribe deny filters), published 2026-07-08, changed lines 5071 to 5080 of server/mqtt.go.

How does mqttDeliverMsgCbQoS12 compare to the rest of nats-io/nats-server?

nats-io/nats-server has 21 CVEs with a located fix in total; 1 of them changed mqttDeliverMsgCbQoS12.

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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nats-io/nats-server

Function

mqttDeliverMsgCbQoS12

Name: mqttDeliverMsgCbQoS12 in nats-io/nats-server: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

server/mqtt.go

Last patched July 8, 2026

1

CVEs

That changed this function

2

Distinct patches

Backports counted once

10

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

mqttDeliverMsgCbQoS12 in nats-io/nats-server was changed by 1 published CVE fixes in 2026, in 2 distinct patches that added or removed 10 lines in total.

nats-io/nats-server has 21 CVEs with a located fix in total, so 5% of them touched this function.

CVEs that patched it

Every published CVE whose fix changed mqttDeliverMsgCbQoS12, newest first, with the lines each fix touched.

NATS Server: MQTT retained and QoS replay bypass subscribe deny filters
CVE-2026-58209 · lines 5071–5080 · +10 −0
Medium · CVSS 4.3
EPSS 0.3%2026-07-08

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Other functions in these files

Functions in the same file that CVE fixes also changed.

Other hotspots in the repository

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

canSubscribe3 CVEs · server/client.go mqttParseConnect2 CVEs · server/mqtt.go processMsgResults2 CVEs · server/client.go processClientOrLeafAuthentication2 CVEs · server/auth.go checkActivation2 CVEs · server/accounts.go mqttParsePub1 CVEs · server/mqtt.go

All patched functions in nats-io/nats-server

Frequently asked questions

Common questions about CVE fixes to mqttDeliverMsgCbQoS12.

How many CVEs have patched mqttDeliverMsgCbQoS12?: 1 published CVEs changed mqttDeliverMsgCbQoS12 in nats-io/nats-server, in 2 distinct patches totalling 10 changed lines, between 2026 and 2026.
What is the latest CVE that changed mqttDeliverMsgCbQoS12?: CVE-2026-58209 (NATS Server: MQTT retained and QoS replay bypass subscribe deny filters), published 2026-07-08, changed lines 5071 to 5080 of server/mqtt.go.
How does mqttDeliverMsgCbQoS12 compare to the rest of nats-io/nats-server?: nats-io/nats-server has 21 CVEs with a located fix in total; 1 of them changed mqttDeliverMsgCbQoS12.
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

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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