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CVE-2026-28917 is a WebKit vulnerability affecting Safari and multiple Apple operating systems, including Safari 26.5, iOS 18.7.9, iPadOS 18.7.9, iOS 26.5, iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, and watchOS 26.5. The flaw is triggered when WebKit processes maliciously crafted web content and can result in an unexpected process crash. Apple states the issue was addressed with improved input validation. Some associated Apple advisories also characterize the issue as a use-after-free addressed with improved memory management, but the available information is not fully consistent across references. Based on the most direct product descriptions, the vulnerability is best characterized as a web-content handling flaw in WebKit that can be triggered remotely via crafted content and leads to process instability or Safari termination.
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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.
18 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A use-after-free vulnerability in Apple web content processing that may cause an unexpected Safari crash via maliciously crafted web content.
A use-after-free vulnerability in Apple software for macOS Sonoma and macOS Sequoia where maliciously crafted web content may cause an unexpected Safari crash.
A WebKit vulnerability where maliciously crafted web content may cause an unexpected process crash.
A use-after-free vulnerability in macOS Tahoe triggered by maliciously crafted web content, potentially causing an unexpected Safari 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.