PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-79066 Google CVE debrief

CVE-2026-79066 is an improper input validation vulnerability in Google Chrome's Navigation feature. The vulnerability was published on 2026-08-25T21:18:02.253Z and has a CVSS score of 3.1, rated as LOW in severity. A remote attacker who has compromised the renderer process can bypass site isolation via a crafted HTML page. Defenders should review and apply Chrome updates, ensure site isolation configurations are enforced, and monitor for suspicious renderer process activities. The CVE record has not been modified since its publication.

Vendor
Google
Product
Chrome
CVSS
LOW 3.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-25
Original CVE updated
2026-08-31
Advisory published
2026-08-25
Advisory updated
2026-08-31

Who should care

Defenders responsible for managing Google Chrome deployments, particularly in environments where site isolation is critical, should be aware of this vulnerability and take action to mitigate it. This includes reviewing and applying Chrome updates, ensuring site isolation configurations are enforced, and monitoring for suspicious renderer process activities. Additionally, defenders should review compensating controls for exposed systems while remediation is scheduled and verified.

Technical summary

CVE-2026-79066 is an improper input validation vulnerability in Google Chrome's Navigation feature prior to version 152.0.7977.65. A remote attacker who has compromised the renderer process can bypass site isolation via a crafted HTML page. The vulnerability has a CVSS score of 3.1 and is rated as LOW in severity. Defenders should prioritize reviewing and applying Chrome updates, ensuring site isolation configurations are enforced, and monitoring for suspicious renderer process activities.

Defensive priority

Defenders should prioritize reviewing and applying Chrome updates, ensuring site isolation configurations are enforced, and monitoring for suspicious renderer process activities.

Recommended defensive actions

  • Apply Chrome updates to version 152.0.7977.65 or later
  • Enforce site isolation configurations
  • Monitor for suspicious renderer process activities
  • Review and update input validation mechanisms
  • Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The CVE-2026-79066 record indicates improper input validation in Google Chrome's Navigation feature prior to version 152.0.7977.65, allowing a remote attacker to bypass site isolation via a crafted HTML page. The Chromium security severity is rated as Medium, with a CVSS score of 3.1 and severity of LOW. Official sources include the CVE Program and NIST NVD.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-79066 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-79066

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-79066 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-79066

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.