UBUNTU-CVE-2026-101003

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Source

https://ubuntu.com/security/CVE-2026-101003

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101003.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-101003

Upstream

CVE-2026-101003

Published

2026-09-28T06:16:00Z

Modified

2026-10-17T12:57:53Z

Severity

5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
5.5 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

A weakness has been identified in Cesanta Mongoose up to 7.21. Affected by this vulnerability is the function fn of the file tutorials/mqtt/mqtt-server/main.c of the component MQTT Broker. Executing a manipulation can lead to stack-based buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 7.22 addresses this issue. This patch is called a9df523f76f43a38bd53b4232b9cfd4c16869e71. Upgrading the affected component is advised.

References

Affected packages

Ubuntu:26.10 / mongoose

Package

Name: mongoose
Purl: pkg:deb/ubuntu/mongoose?arch=source&distro=stonking

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

7.*

7.21+ds-1

7.21+ds-2

7.22+ds-1

7.23+ds-1

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "mongoose-webserver-source",
            "binary_version":  "7.23+ds-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101003.json"