CVE-2026-87608

Analyzed Analyzed - Analysis Complete

Improper Certificate Validation in Google Chrome via FedCM

Publication date: 2026-09-09

Last updated on: 2026-09-14

Assigner: Chrome

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)

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-09-09

Last Modified

2026-09-14

Generated

2026-09-29

AI Q&A

2026-09-09

EPSS Evaluated

2026-09-27

NVD

CVE-2026-87608

EUVD

EUVD-2026-74474

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 153.0.8010.36 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-295	The product does not validate, or incorrectly validates, a certificate.

Attack-Flow Graph

Executive Summary

This vulnerability involves improper certificate validation in FedCM within Google Chrome versions before 153.0.8010.36. A remote attacker could exploit this by using social engineering tactics to bypass web origin policy through manipulated network traffic.

Detection Guidance

Detection of this vulnerability requires checking the installed version of Google Chrome against the patched version (153.0.8010.36 or later). Use the following commands to verify the version on different systems.

Impact Analysis

An attacker could trick you into visiting a malicious site that appears legitimate, potentially leading to unauthorized access to sensitive data or actions on your behalf without proper origin verification.

Compliance Impact

This vulnerability may lead to unauthorized data access or exposure, which could violate GDPR's data protection principles or HIPAA's security requirements for safeguarding protected health information.

Mitigation Strategies

Update Google Chrome to version 153.0.8010.36 or later to address the improper certificate validation in FedCM.

Hi! I’m here to help you understand CVE-2026-87608. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70