WebKit sandbox restriction bypass in Safari, iOS, iPadOS, and macOS Tahoe
CVE-2026-43701 is a WebKit sandbox-related vulnerability fixed by Apple in Safari 26.5.2, iOS 26.5.2, iPadOS 26.5.2, and macOS Tahoe 26.5.2. According to Apple, a malicious website may be able to process restricted web content outside the sandbox. Apple states the issue was addressed with improved checks. The available information indicates a sandbox restriction bypass in WebKit during web content processing, but Apple has not publicly disclosed the specific vulnerable function or code path.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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.
Recent activity
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A WebKit sandbox escape vulnerability that may allow a malicious website to process restricted web content outside the sandbox.
A sandbox bypass vulnerability that could allow a malicious website to process restricted web content outside the sandbox.
A macOS Tahoe vulnerability that may allow a malicious website to process restricted web content outside the sandbox.
A sandbox bypass vulnerability in Apple web content handling that could allow a malicious website to process restricted web content outside the sandbox.
The version that knows your environment.
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.