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CVE-2026-91748 is a high-severity time-of-check to time-of-use race condition in the Extensions component of Google Chrome for macOS before version 153.0.8010.47. A remote attacker that has already compromised a Chrome renderer process can, through required social engineering and user-interface interaction, race extension-related operations to potentially execute arbitrary code outside the Chrome sandbox.
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No public exploit code observed for this vulnerability.
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High-severity race-condition vulnerability in Chrome Extensions.
A High-severity race-condition vulnerability in Chrome Extensions.
A high-severity race condition in Google Chrome Extensions on macOS that could allow an attacker who has already compromised the renderer process, combined with social engineering/UI interaction, to execute arbitrary code outside Chrome's sandbox.
A high-severity race condition (CWE-367) in Google Chrome Extensions on macOS before version 153.0.8010.47. An attacker who has already compromised the renderer process and uses social engineering may execute arbitrary code outside Chrome's sandbox through UI interaction.
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.