Use-after-free in WebKit web content processing
CVE-2026-43742 is a use-after-free vulnerability in WebKit affecting Safari 26.5.2 prior versions, iOS 26.5.2 prior versions, iPadOS 26.5.2 prior versions, and macOS Tahoe 26.5.2 prior versions. Apple states the issue was addressed with improved memory management. When WebKit processes maliciously crafted web content, stale memory may be accessed after free, resulting in instability and an unexpected process crash.
Are you exposed to this one?
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
Recent activity
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A WebKit vulnerability where malicious web content may cause an unexpected process crash.
A path handling vulnerability that could allow malicious web content to disclose sensitive user information.
A macOS Tahoe web content vulnerability involving path handling that may disclose sensitive user information.
A path handling vulnerability in Apple web content processing that could disclose sensitive user information.
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.