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PatchSiren cyber security CVE debrief

CVE-2026-5876 Google CVE debrief

CVE-2026-5876 is a side-channel information leakage vulnerability in Navigation in Google Chrome prior to version 147.0.7727.55. This vulnerability allowed a remote attacker to leak cross-origin data via a crafted HTML page. The Chromium security severity of this vulnerability is rated as Medium with a CVSS score of 6.5. The vulnerability affects users of Google Chrome, particularly those who browse the internet and may be exposed to crafted HTML pages. Web developers and administrators should also be aware of this vulnerability as it could impact the security of web applications. The vulnerability has been addressed in Google Chrome version 147.0.7727.55 and later.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-08
Original CVE updated
2026-07-24
Advisory published
2026-04-08
Advisory updated
2026-07-24

Who should care

This CVE affects users of Google Chrome, particularly those who browse the internet and may be exposed to crafted HTML pages. Web developers and administrators should also be aware of this vulnerability as it could impact the security of web applications. The vulnerability has been addressed in Google Chrome version 147.0.7727.55 and later.

Technical summary

The vulnerability is caused by a side-channel information leakage in the Navigation component of Google Chrome. This occurs when a user navigates to a crafted HTML page, allowing a remote attacker to leak cross-origin data. The vulnerability has been addressed in Google Chrome version 147.0.7727.55 and later. The Chromium security severity of this vulnerability is rated as Medium with a CVSS score of 6.5. Users of Google Chrome should update to version 147.0.7727.55 or later to mitigate this vulnerability.

Defensive priority

Medium

Recommended defensive actions

  • Update Google Chrome to version 147.0.7727.55 or later
  • Implement compensating controls such as Content Security Policy (CSP) to restrict cross-origin data access
  • Monitor web application logs for suspicious activity
  • Perform regular vulnerability assessments and penetration testing
  • Keep software and plugins up-to-date
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-04-08T22:16:27.210Z and last modified on 2026-07-24T08:10:00.150Z. The NVD entry is currently Analyzed. This information is based on the NVD entry and the official CVE record. The vulnerability affects Google Chrome users, particularly those who browse the internet and may be exposed to crafted HTML pages. Web developers and administrators should also be aware of this vulnerability as it could impact the security of web applications. The CVE record and NVD entry provide additional context and details about the vulnerability.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-04-08T22:16:27.210Z and has not been modified since then. The NVD entry is currently Analyzed.