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CVE-2026-28958 is an information disclosure vulnerability in WebKit affecting Apple platforms including Safari, iOS, iPadOS, macOS, and visionOS. The issue is described as insufficient data protection that could allow an application to access sensitive user data. Apple indicates the flaw was addressed through improved data protection. Publicly available details do not identify the specific vulnerable function or code path.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An input validation issue in Apple web content processing that may cause an unexpected process crash via maliciously crafted web content.
An input validation issue in Apple software for macOS Sonoma and macOS Sequoia where maliciously crafted web content may cause an unexpected process crash.
An information disclosure vulnerability in WebKit that may allow an app to access sensitive user data.
A web content vulnerability in macOS Tahoe that may lead to an unexpected process crash.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.