CVE-2026-84357

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: none known
Published: 2026-09-02 · updated 2026-09-03
Weakness: CWE-20

Description

Improper input validation in Omnibox in Google Chrome prior to 152.0.7977.75 allowed a remote attacker leveraging social engineering to bypass web origin policy via crafted network traffic. (Chromium security severity: High)

Affected products

Google Chrome: before 152.0.7977.75 — fixed in 152.0.7977.75

How to fix

Upgrade to a fixed version: Google Chrome 152.0.7977.75. Check the vendor advisory for mitigations.

References

https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop.html
https://issues.chromium.org/issues/523208474

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