What’s Vulnerable › Vulnerabilities

CVE-2026-87589

• Severity: medium (CVSS 6.5 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: yes
• Published: 2026-09-09 · updated 2026-09-11
• Weakness: CWE-863

Description

Incorrect authorization in SiteIsolation in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Medium)

Affected products

• Google Chrome: before 153.0.8010.36 — fixed in 153.0.8010.36

How to fix

Upgrade to a fixed version: Google Chrome 153.0.8010.36. Check the vendor advisory for mitigations.

References

• https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html
• https://issues.chromium.org/issues/518002426

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