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CVE-2026-11649 is a high-severity use-after-free vulnerability in the V8 JavaScript engine of Google Chrome affecting versions prior to 149.0.7827.103. The flaw can be triggered when a user visits a crafted HTML page, causing V8 to access memory after it has been freed. This memory-safety error can lead to memory corruption and allows a remote attacker to achieve arbitrary code execution within the browser sandbox.
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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.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity vulnerability affecting Chrome's V8 subsystem, mentioned as part of the broader June 2026 Chrome security update.
A use-after-free vulnerability in V8 affecting Google Chrome prior to 149.0.7827.103 that allows remote code execution inside the sandbox via a crafted HTML page.
A high-severity use-after-free vulnerability in Chrome's V8 JavaScript engine.
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.