CVE-2026-87608

Severity: high (CVSS 7.5 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: 2026-09-09 · updated 2026-09-14
Weakness: CWE-295

Description

Improper certificate validation in FedCM in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to bypass web origin policy via crafted network traffic. (Chromium security severity: Low)

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/540072282

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