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CVE-2026-91718 is a High-severity use-after-free vulnerability in the Core component of Google Chrome prior to version 153.0.8010.47. A remote attacker can trigger the memory-safety flaw by causing a victim to load crafted HTML content, enabling arbitrary code execution outside the Chrome 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.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
High-severity use-after-free vulnerability in Chrome Core.
A High-severity use-after-free vulnerability in Chrome Core.
A high-severity use-after-free vulnerability in Google Chrome's Core component. Chrome versions before 153.0.8010.47 allow a remote attacker to execute arbitrary code outside the browser sandbox through a crafted HTML page.
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.