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CVE-2026-43725 is an input validation vulnerability in WebKit that allows a malicious website to cause restricted web content to be processed outside the intended sandbox. The flaw affects Apple platforms and Safari releases that include the vulnerable WebKit component. Apple states the issue was addressed through improved input validation. The vulnerability is a sandbox bypass condition in web content handling rather than a memory-safety issue, and successful exploitation requires a target to load attacker-controlled web content.
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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.
16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A WebKit vulnerability that could allow a malicious website to process restricted web content outside the sandbox.
A WebKit sandbox escape vulnerability that may allow a malicious website to process restricted web content outside the sandbox.
A WebKit vulnerability that may allow a malicious website to process restricted web content outside the sandbox.
An input validation vulnerability in Apple macOS Tahoe that could allow bypass of security restrictions on affected systems.
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.