CVE-2026-120930: Incorrect authorization in Blink

Published May 23, 2026
·
Updated

Incorrect authorization in Blink in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: High)

Credit

lebr0nli(National Yang Ming Chiao Tung University), Dept.(CS), Security, Systems Lab

Affected Software

6 affected componentsFixes available
Google Chrome<156.0.8078.47
156.0.8078.47
Google Chrome<156.0.8078.47
debian/chromium<156.0.8078.47-1~deb12u1
156.0.8078.47-1~deb12u1
debian/chromium<156.0.8078.47-1~deb13u1
156.0.8078.47-1~deb13u1
debian/chromium<156.0.8078.47-1
156.0.8078.47-1
debian/chromium<=150.0.7871.100-1~deb12u1, <=150.0.7871.181-1~deb13u1
156.0.8078.79-1~deb12u1156.0.8078.79-1~deb13u1156.0.8078.79-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 156.0.8078.47
  2. Upgrade

    Upgrade debian/chromium to a version that resolves this vulnerability.

    Fixed in 156.0.8078.47-1~deb12u1
  3. Upgrade

    Upgrade debian/chromium to a version that resolves this vulnerability.

    Fixed in 156.0.8078.47-1~deb13u1
  4. Upgrade

    Upgrade debian/chromium to a version that resolves this vulnerability.

    Fixed in 156.0.8078.47-1
  5. Upgrade

    Upgrade debian/chromium to a version that resolves this vulnerability.

    Fixed in 156.0.8078.79-1~deb12u1Fixed in 156.0.8078.79-1~deb13u1Fixed in 156.0.8078.79-1

Event History

May 23, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Nov 3, 2026
CVE Published
via MITRE·09:20 PM
Data Sourced
via MITRE·09:20 PM
DescriptionWeakness
Data Sourced
via NVD·10:19 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·10:19 PM
Affected Software
Data Sourced
via OSV·10:19 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

Which product is identified as affected?

The record identifies Google Chrome from Google. It does not provide affected version numbers or platform-specific scope.

2

Does the available information describe exploitation requirements or temporary mitigations?

No. The provided data does not state what access or conditions an attacker needs, whether default configurations are affected, or what mitigations are available before updating.

Company

Resources

Contact

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