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CVE-2026-76021 is a high-severity use-after-free vulnerability in the Document Object Model (DOM) component of Google Chrome. In versions prior to 151.0.7922.173, improper lifetime management of DOM objects can result in memory being accessed after it has been freed. A remote attacker can trigger the flaw by causing a target to load a crafted HTML page, potentially corrupting renderer memory and achieving 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.
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Chromium-related vulnerability referenced in a Fedora 44 security update.
A use-after-free vulnerability in Chromium's DOM component.
A use-after-free vulnerability in Chromium's DOM component.
A use-after-free vulnerability in the Chromium DOM component addressed in the Fedora chromium 151.0.7922.173 update.
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.