High [CVE-2026-19558] Arbitrary code execution via malicious extension installation
This high-severity Red Hat Linux advisory covers CVE-2026-19558.
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Summary
Use after free in Extensions in Google Chrome prior to 151.0.7922.137 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security severity: High) This Important flaw in Google Chrome Extensions allows for arbitrary code execution within the browser's sandbox.
Exploitation requires a user to be convinced to install a malicious extension, limiting the attack vector to user interaction rather than remote, unauthenticated access. Red Hat severity: Important — CVSS 7.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H).
Weakness: CWE-416.
- < 151.0.7922.137
Official advisory · high-confidence parse· fetched 30 days 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 30 days 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 30 days ago·verify at source
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