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CVE-2026-79264 Google CVE debrief

The CVE-2026-79264 vulnerability, caused by incorrect reference resolution in Preload in Google Chrome prior to version 152.0.7977.65, allows a remote attacker to bypass web origin policy via a crafted HTML page. This Medium severity vulnerability, with a CVSS score of 4.3, requires immediate attention. Users of Google Chrome prior to version 152.0.7977.65 should apply the patch immediately to prevent potential web origin policy bypass. The vulnerability was reported in Google Chrome prior to version 152.0.7977.65, and Chromium security severity is Medium. To address this vulnerability, IT administrators and security teams responsible for managing Chrome deployments should prioritize patching and verify that Chrome is updated to the latest version.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 4.3
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

Users of Google Chrome prior to version 152.0.7977.65 should apply the patch immediately to prevent potential web origin policy bypass. IT administrators and security teams responsible for managing Chrome deployments should prioritize patching.

Technical summary

The CVE-2026-79264 vulnerability is caused by incorrect reference resolution in Preload in Google Chrome prior to version 152.0.7977.65. This allows a remote attacker to bypass web origin policy via a crafted HTML page. The vulnerability has a Medium security severity according to Chromium and a CVSS score of 4.3. To address this vulnerability, IT administrators and security teams responsible for managing Chrome deployments should prioritize patching and verify that Chrome is updated to the latest version.

Defensive priority

Medium severity vulnerability in Google Chrome, requiring immediate attention to prevent potential web origin policy bypass.

Recommended defensive actions

  • Apply the official patch to update Google Chrome to version 152.0.7977.65 or later.
  • Verify that Chrome is updated to the latest version.
  • Monitor for any suspicious activity related to web origin policy bypass.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE-2026-79264 vulnerability was reported in Google Chrome prior to version 152.0.7977.65. The issue is related to incorrect reference resolution in Preload, allowing a remote attacker to bypass web origin policy via a crafted HTML page. Chromium security severity is Medium, with a CVSS score of 4.3.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-79264 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-79264

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

  • CVE-2026-79264 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-79264

    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.