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NVD Vulnerability Details :
CVE-2025-11720
Modified
More InfoOfficial Page
Source-security@mozilla.org
View Known Exploited Vulnerability (KEV) details
Published At-14 Oct, 2025 | 13:15
Updated At-13 Apr, 2026 | 15:16

The Firefox and Firefox Focus UI for the Android custom tab feature only showed the "site" that was loaded, not the full hostname. User supplied content hosted on a subdomain of a site could have been used to fool a user into thinking it was content from a different subdomain of that site. This vulnerability was fixed in Firefox 144.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.18.1HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Secondary3.18.1HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Type: Primary
Version: 3.1
Base score: 8.1
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Type: Secondary
Version: 3.1
Base score: 8.1
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CPE Matches
Mozilla Corporation
mozilla
>>firefox>>Versions before 144.0(exclusive)
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Google LLC
google
>>android>>-
cpe:2.3:o:google:android:-:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-451Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-451
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://bugzilla.mozilla.org/show_bug.cgi?id=1979534security@mozilla.org
Issue Tracking
Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1984370security@mozilla.org
Issue Tracking
Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-81/security@mozilla.org
Vendor Advisory
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1979534
Source: security@mozilla.org
Resource:
Issue Tracking
Permissions Required
Hyperlink: https://bugzilla.mozilla.org/show_bug.cgi?id=1984370
Source: security@mozilla.org
Resource:
Issue Tracking
Permissions Required
Hyperlink: https://www.mozilla.org/security/advisories/mfsa2025-81/
Source: security@mozilla.org
Resource:
Vendor Advisory
Change History
0Changes found
Details not found