The issue was addressed with improved input validation. (CVE-2026-43708)
CVE-2026-43708 is a medium severity vulnerability related to insufficient input validation in Safari, iOS, iPadOS, and macOS Tahoe. A malicious website could exploit this flaw to exfiltrate data across origins. The issue has been fixed in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2 through improved input validation.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-43708) involves improper input validation that could allow a malicious website to exfiltrate data cross-origin. The flaw affects Safari, iOS, iPadOS, and macOS Tahoe before version 26.5.2. The vendor addressed the issue by improving input validation in the specified versions, mitigating the risk of cross-origin data leakage. The CVSS 3.1 score is 4.3, indicating a moderate impact primarily on confidentiality with no integrity or availability impact.
Potential Impact
An attacker controlling a malicious website could exploit this vulnerability to exfiltrate data from other origins, potentially leading to limited confidentiality loss. There is no impact on integrity or availability. The vulnerability requires user interaction (UI:R) but no privileges and has low attack complexity.
Mitigation Recommendations
The vulnerability is fixed in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. Users and administrators should update to these versions or later to remediate the issue. No other mitigation steps are indicated.
The issue was addressed with improved input validation. (CVE-2026-43708)
Description
CVE-2026-43708 is a medium severity vulnerability related to insufficient input validation in Safari, iOS, iPadOS, and macOS Tahoe. A malicious website could exploit this flaw to exfiltrate data across origins. The issue has been fixed in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2 through improved input validation.
CVSS v3.1
Score 4.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-43708) involves improper input validation that could allow a malicious website to exfiltrate data cross-origin. The flaw affects Safari, iOS, iPadOS, and macOS Tahoe before version 26.5.2. The vendor addressed the issue by improving input validation in the specified versions, mitigating the risk of cross-origin data leakage. The CVSS 3.1 score is 4.3, indicating a moderate impact primarily on confidentiality with no integrity or availability impact.
Potential Impact
An attacker controlling a malicious website could exploit this vulnerability to exfiltrate data from other origins, potentially leading to limited confidentiality loss. There is no impact on integrity or availability. The vulnerability requires user interaction (UI:R) but no privileges and has low attack complexity.
Mitigation Recommendations
The vulnerability is fixed in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. Users and administrators should update to these versions or later to remediate the issue. No other mitigation steps are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-3555-mvv3-v5xj
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-43708"]
- Ecosystems
- []
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a83aa84bf8831d539e33992
Added to database: 08/18/2026, 00:42:44 UTC
Last enriched: 08/18/2026, 00:57:13 UTC
Last updated: 08/18/2026, 01:01:11 UTC
Views: 3
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