EUVD-2026-40196
GHSA-29hx-mf8v-qr9g
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Network-delivered via webpage visit (AV:N, UI:R); no auth needed; impact is confidentiality-only data leak with no scope change.
Primary rating from Vendor (apple).
CVSS VectorVendor: apple
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Lifecycle Timeline
5DescriptionCVE.org
A permissions issue was addressed with additional restrictions. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Visiting a website may leak sensitive data.
AnalysisAI
Sensitive data leakage in Apple Safari, iOS/iPadOS, and macOS Tahoe before version 26.5.2 exposes users to cross-site data disclosure when visiting a malicious or compromised website. The root cause is a permissions enforcement deficiency (CWE-1264) that allows a web context to access data beyond its intended permission boundary. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the victim visit a malicious or attacker-controlled website using a vulnerable version of Safari, iOS/iPadOS, or macOS Tahoe (all versions prior to 26.5.2). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 6.5 (Medium) is driven by a network-reachable, low-complexity, no-privileges-required vector with high confidentiality impact, offset by the requirement for user interaction (UI:R) and no integrity or availability impact (I:N/A:N). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker registers or compromises a website and embeds logic that exploits the permissions boundary flaw in Safari's WebKit engine. A victim browses to the page - whether through a phishing link, malvertising, or a compromised legitimate site - causing Safari to expose sensitive data (e.g., cookies, storage contents, or data from a co-located origin) to the attacker-controlled context. … |
| Remediation | The primary fix is to upgrade to the vendor-released patched versions: Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, and macOS Tahoe 26.5.2, all available through standard Apple software update channels. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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