CVE-2025-23109

MEDIUM

Mozilla Firefox < 134.0 - Origin Validation Error

Title source: rule
STIX 2.1

Description

Long hostnames in URLs could be leveraged to obscure the actual host of the website or spoof the website address. This vulnerability was fixed in Firefox for iOS 134.

Scores

CVSS v3 6.5
EPSS 0.0114
EPSS Percentile 78.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-346
Status published
Products (2)
mozilla/firefox < 134.0
Mozilla/Firefox for iOS 134
Published Jan 11, 2025
Tracked Since Feb 18, 2026