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CVE-2026-19558 is a use-after-free vulnerability in the Extensions component of Google Chrome before version 151.0.7922.137. An attacker who persuades a user to install a crafted malicious Chrome extension can exploit the flaw to execute arbitrary code inside the browser sandbox. The specific vulnerable function and memory-lifetime sequence are not publicly detailed.
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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.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity use-after-free vulnerability in Google Chrome's Extensions component permits arbitrary code execution inside a sandbox when a user installs a malicious extension. The advisory identifies affected Chromium packages and recommends updating to 151.0.7922.137-1~deb12u1 or later. The CVSS v3 base score is 7.5; no known exploits are reported as available.
A high-severity use-after-free vulnerability in the Chrome Extensions framework/API.
A high-severity use-after-free vulnerability in Chrome Extensions.
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.