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CVE-2026-12465 is a high-severity object lifecycle and insufficient validation of untrusted input vulnerability in the Metrics component of Google Chrome prior to version 149.0.7827.155. The flaw can be triggered through a crafted HTML page and is exploitable by an attacker who has already achieved compromise of the renderer process. The vulnerability affects the boundary between a compromised renderer and the browser sandbox, creating a path to escape sandbox restrictions. The issue is described as an object lifecycle problem in Metrics and has also been categorized as insufficient validation of untrusted input, indicating unsafe handling of attacker-controlled state or data during object processing within that component.
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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.
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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.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity insufficient validation of untrusted input vulnerability in Chrome's Metrics component.
A high-severity insufficient validation of untrusted input vulnerability in Chrome Metrics.
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.