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 8 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 8 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 8 days ago·verify at source
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