CVE-2025-43526 | This issue was addressed with improved URL validation. This … | CVSS 9.8 CRITICAL

Description

This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac with Lockdown Mode enabled, web content opened via a file URL may be able to use Web APIs that should be restricted.

Metadata

CVE ID: CVE-2025-43526
State: PUBLISHED
Assigner: apple
Reserved: 2025-04-16 15:27 UTC
Published: 2025-12-17 20:46 UTC
Last updated: 2026-04-02 18:15 UTC
Primary CWE: CWE-601
CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
Vendor / Product: Apple / Safari
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (2)

Vendor	Product	Platform	Versions
Apple	macOS	—	0 < 26.2
Apple	Safari	—	0 < 26.2

Weakness (CWE)

CWE	Source	Description
—	cna	On a Mac with Lockdown Mode enabled, web content opened via a file URL may be able to use Web APIs that should be restricted
CWE-601	adp	CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	adp	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (2)