CVE-2025-1935

Severity CVSS v4.0:

Pending analysis

Type:

CWE-79 Cross-Site Scripting (XSS)

Publication date:

04/03/2025

Last modified:

13/04/2026

Description

A web page could trick a user into setting that site as the default handler for a custom URL protocol. This vulnerability was fixed in Firefox 136, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): Low
Integrity (I): None
Availability (A): None

Base Score 3.x

4.30

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:mozilla:firefox:::::esr:::*		128.8.0 (excluding)
cpe:2.3:a:mozilla:firefox::::::::		136.0 (excluding)
cpe:2.3:a:mozilla:thunderbird::::::::		128.8.0 (excluding)
cpe:2.3:a:mozilla:thunderbird::::::::	129.0 (including)	136.0 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2025-1935

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools