High [CVE-2026-16806] Arbitrary code execution via use after free vulnerability in WebMCP
This high-severity Red Hat Linux advisory covers CVE-2026-16806.
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Summary
Use after free in WebMCP in Google Chrome prior to 150.0.7871.186 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High) This can occur when a user visits a specially crafted HTML page, potentially leading to unauthorized control over the affected system.
This vulnerability is rated Important as it allows a remote attacker to achieve arbitrary code execution within the Chromium browser's sandbox. The flaw, a use-after-free in the WebMCP component, is triggered when a user navigates to a specially crafted HTML page, posing a significant risk of unauthorized system control.
Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
- < 150.0.7871.186
Official advisory · high-confidence parse· fetched 5 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 5 days ago·verify at source
Mitigation
The source record does not include mitigation steps. That does not mean no fix exists. Read the vendor advisory below for the authoritative guidance.
Official advisory · high-confidence parse· fetched 5 days ago·verify at source
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