CVE-2026-91749 is a Critical use-after-free vulnerability in the Workers component of Google Chrome before version 153.0.8010.47. A remote attacker can use a crafted HTML page to trigger the memory-safety flaw after a victim loads the page, potentially achieving 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.
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.
Critical use-after-free vulnerability in Chrome Workers.
A Critical use-after-free vulnerability in Chrome Workers.
A critical use-after-free vulnerability (CWE-416) in Google Chrome Workers. A remote attacker could induce arbitrary code execution outside Chrome's sandbox by convincing a user to load a crafted HTML page. It affects Chrome versions before 153.0.8010.47.
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.