CVE-2025-23109: 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…

PriorityP427medium6.5CVSS 3.1

AVNACLPRNUIRSUCNIHAN

EPSS

0.18%

7.5th percentile

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.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
debian	firefox	—	—
mozilla	firefox	< 134.0	134.0
mozilla	firefox	—	—

CVSS provenance

nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

osv6.5MEDIUM

vendor_debian6.5LOW

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