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CVE-2019-8771 is an insufficient iframe sandbox-enforcement vulnerability in WebKit. Maliciously crafted web content can cause the affected engine to violate an iframe sandboxing policy, defeating restrictions intended to constrain framed content. The issue affects WebKitGTK and WPE WebKit versions earlier than 2.26.0 and was also fixed in Safari 13.0.1 and iOS 13.
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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.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
WebKitGTK flaw allowing violation of iframe sandboxing policy.
A Safari browser vulnerability reportedly used by eGobbler to bypass popup blocking and iframe sandboxing protections in support of forced-redirect malvertising.
An iframe sandbox-enforcement vulnerability in WebKitGTK and WPE WebKit that could allow maliciously crafted web content to violate iframe sandboxing policy.
An iframe sandbox-policy enforcement vulnerability in WebKit. Malicious web content can violate iframe sandboxing restrictions, potentially affecting confidentiality and integrity. It was fixed upstream in Safari 13.0.1 and iOS 13, and Red Hat issued fixes for affected WebKitGTK packages in RHEL 7 and RHEL 8.
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.