CVE-2025-12790

Nov. 12, 2025, 4:20 p.m.

7.4
High

Description

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.

Product(s) Impacted

Product Versions
rubygem
  • *
mqtt
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-29
Path Traversal: '\..\filename'
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\..\filename' (leading backslash dot dot) sequences that can resolve to a location that is outside of that directory.

References

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

Tags

secalert@redhat.com
CWE-29
2025-11-06
CVE-2025-12790

CVSS Score

7.4 / 10

CVSS Data - 3.1

  • Attack Vector: NETWORK
  • Attack Complexity: HIGH
  • Privileges Required: NONE
  • Scope: UNCHANGED
  • Confidentiality Impact: HIGH
  • Integrity Impact: HIGH
  • Availability Impact: NONE

    • CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

    View Vector String

Timeline

Published: Nov. 6, 2025, 9:15 p.m.
Last Modified: Nov. 12, 2025, 4:20 p.m.

Status : Awaiting Analysis

CVE has been marked for Analysis. Normally once in this state the CVE will be analyzed by NVD staff within 24 hours.

More info

Source

secalert@redhat.com

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.