Iframe sandbox policy bypass in Safari custom URL scheme handling
CVE-2024-44155 is a Safari vulnerability in Apple’s handling of custom URL schemes. According to the provided Apple advisory text, the issue was caused by insufficient input validation in custom URL scheme handling, which could allow maliciously crafted web content to violate iframe sandboxing policy. Apple states the issue was addressed with improved input validation. The vulnerability affects Safari and was fixed in Safari 18, iOS 17.7.1 and iPadOS 17.7.1, iOS 18 and iPadOS 18, macOS Sequoia 15, and watchOS 11.
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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
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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
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A custom URL scheme handling/input validation issue where crafted web content could violate iframe sandboxing policy.
Custom URL scheme handling/input validation issue allowing crafted web content to violate iframe sandboxing policy.
A Safari web content vulnerability that may allow violation of iframe sandboxing policy.
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.