Google Chrome patched two high-severity vulnerabilities affecting desktop builds on Windows, Linux, and macOS before version 146.0.7680.178. The first, CVE-2026-5282, is an out-of-bounds read in WebCodecs that could be triggered if a user opens a crafted HTML page, potentially exposing sensitive memory and causing a crash. NVD classified the flaw as CWE-125 and scored it with the vector AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H, indicating remote exploitation with low complexity but requiring user interaction.
The second flaw, CVE-2026-5289, is a use-after-free in Chrome's Navigation component that could allow an attacker who has already compromised the renderer process to potentially escape the browser sandbox through a crafted HTML page. NVD mapped the issue to CWE-416 and assigned the vector AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H, reflecting the risk of broader compromise across confidentiality, integrity, and availability. Google referenced both issues in its Chrome stable channel advisory and linked them to Chromium issue tracker entries, making version 146.0.7680.178 the key remediation point for affected users and enterprises.

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On April 1, 2026, CVE-2026-5289 was recorded as a high-severity use-after-free flaw in Chrome's Navigation component. The vulnerability could potentially allow a remote attacker, after compromising the renderer process, to escape the sandbox via a crafted HTML page.
On April 1, 2026, CVE-2026-5282 was recorded as a high-severity out-of-bounds read vulnerability in Chrome's WebCodecs component. Google and NVD described it as exploitable via a crafted HTML page that could trigger an out-of-bounds memory read when opened by a user.
On April 1, 2026, Google published a Chrome stable channel advisory indicating that versions prior to 146.0.7680.178 were affected by two high-severity vulnerabilities: CVE-2026-5282 in WebCodecs and CVE-2026-5289 in Navigation. The issues affected Chrome on Windows, Linux, and macOS.
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