What’s Vulnerable › Vulnerabilities
CVE-2026-78903
- Severity: low (CVSS 3.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-25 · updated 2026-08-28
- Weakness: CWE-459
Description
Incomplete cleanup in SiteIsolation in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)
Affected products
- Google Chrome: before 152.0.7977.65 — fixed in 152.0.7977.65
How to fix
Upgrade to a fixed version: Google Chrome 152.0.7977.65. Check the vendor advisory for mitigations.
In the news
References
- https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html
- https://issues.chromium.org/issues/518078552
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