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CVE

CVE-2025-12790

MQTT does not validate hostnames
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CVE

CVE-2025-12790

MQTT does not validate hostnames

A flaw was found in Rubygem MQTT. By default, the package used to not have hostname validation, resulting in possible Man-in-the-Middle (MITM) attack.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.4
-
3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
C
H
U
-

Related Resources

No items found.

References

https://nvd.nist.gov/vuln/detail/CVE-2025-12790, https://access.redhat.com/security/cve/CVE-2025-12790, https://bugzilla.redhat.com/show_bug.cgi?id=2413004, https://github.com/njh/ruby-mqtt/blob/main/NEWS.md#ruby-mqtt-version-070-2025-10-29, http://github.com/njh/ruby-mqtt

Severity

7.4

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.4
EPSS Probability
0.00065%
EPSS Percentile
0.20336%
Introduced Version
0
Fix Available
0.7.0

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