CVE-2026-43725 is an improper input validation vulnerability in WebKit web-content handling, affecting Apple products, WebKitGTK, and WPE WebKit. A malicious website may cause restricted web content to be processed outside the sandbox, bypassing intended isolation restrictions and potentially accessing restricted resources. WebKitGTK and WPE WebKit versions before 2.52.5 are affected. The issue was corrected through improved input validation; the precise vulnerable function and triggering input are not identified.
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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.
31 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A WebKitGTK sandbox-bypass vulnerability that may allow a malicious website to process restricted web content outside the sandbox.
A WebKitGTK vulnerability allowing a malicious website to process restricted web content outside the sandbox, undermining sandbox isolation. The advisory includes a fix in the webkit2gtk3 security update.
A WebKitGTK vulnerability allowing a malicious website to process restricted web content outside the sandbox.
A WebKitGTK sandbox escape issue where a malicious website may process restricted web content outside the sandbox.
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.