PatchSiren cyber security CVE debrief

CVE-2026-11284 Google CVE debrief

CVE-2026-11284 is a side-channel information leakage vulnerability in PerformanceAPIs in Google Chrome prior to version 149.0.7827.53. This vulnerability, with a CVSS score of 6.5 and a severity of MEDIUM, allowed a remote attacker to leak cross-origin data via a crafted HTML page.

Vendor: Google
Product: Chrome
CVSS: MEDIUM 6.5
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-05
Original CVE updated: 2026-06-09
Advisory published: 2026-06-05
Advisory updated: 2026-06-09

Who should care

Users of Google Chrome prior to version 149.0.7827.53 should update to the latest version to mitigate this vulnerability.

Technical summary

The vulnerability is caused by a side-channel information leakage in PerformanceAPIs. This allows a remote attacker to leak cross-origin data via a crafted HTML page.

Defensive priority

The CVSS score of 6.5 and a severity of MEDIUM indicate that this vulnerability should be prioritized for remediation.

Recommended defensive actions

Update Google Chrome to version 149.0.7827.53 or later.

Evidence notes

The CVE was published on 2026-06-05T00:17:05.790Z and modified on 2026-06-09T15:27:37.597Z.

Official resources

CVE-2026-11284 CVE record
CVE.org
CVE-2026-11284 NVD detail
NVD
Source item URL
nvd_modified
Mitigation or vendor reference
[email protected] - Release Notes
Source reference
[email protected] - Permissions Required

CVE-2026-11284 was published on 2026-06-05T00:17:05.790Z and modified on 2026-06-09T15:27:37.597Z.