High [CVE-2026-19166] Sandbox escape due to use-after-free in Web Authentication
This high-severity Red Hat Linux advisory covers CVE-2026-19166.
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Summary
Use after free in Web Authentication in Google Chrome prior to 151.0.7922.109 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High) This could potentially allow the attacker to escape the browser's security sandbox, leading to further system compromise.
Exploitation requires user interaction, such as visiting a specially crafted HTML page, but could lead to significant system compromise beyond the browser's confines. Red Hat severity: Important — CVSS 8.3 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H).
Weakness: CWE-825.
- < 151.0.7922.109
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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