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PatchSiren cyber security CVE debrief

CVE-2026-6313 Google CVE debrief

CVE-2026-6313 is a vulnerability in Google Chrome prior to version 147.0.7727.101, where insufficient policy enforcement in CORS allowed a remote attacker to leak cross-origin data via a crafted HTML page. This vulnerability affects Google Chrome deployments and requires immediate attention from defenders to prevent potential data leaks. The CVE record and NVD vulnerability detail page provide information on the vulnerability, its severity, and affected versions. Defenders should assess exposure and prioritize updating to version 147.0.7727.101 or later.

Vendor
Google
Product
Chrome
CVSS
LOW 3.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-15
Original CVE updated
2026-10-26
Advisory published
2026-04-15
Advisory updated
2026-10-26

Who should care

Defenders responsible for managing Google Chrome deployments should assess exposure and prioritize updating to version 147.0.7727.101 or later.

Why it matters

CVE-2026-6313 is a vulnerability in Google Chrome that allows a remote attacker to leak cross-origin data. Defenders should prioritize verifying and updating Google Chrome to prevent potential data leaks.

  • Potential data leaks via crafted HTML pages
  • Verification of Google Chrome version and updates required
  • Monitoring for potential attacks exploiting this vulnerability

Technical summary

Insufficient policy enforcement in CORS in Google Chrome prior to 147.0.7727.101 allowed a remote attacker who had compromised the renderer process to leak cross-origin data via a crafted HTML page. This vulnerability affects Google Chrome deployments and requires immediate attention from defenders to prevent potential data leaks. Defenders should prioritize verifying and updating Google Chrome to version 147.0.7727.101 or later to prevent potential data leaks.

Defensive priority

Defenders should prioritize verifying and updating Google Chrome to version 147.0.7727.101 or later to prevent potential data leaks.

Recommended defensive actions

  • Verify and update Google Chrome to version 147.0.7727.101 or later
  • Review and implement additional security measures to prevent data leaks
  • Monitor for potential attacks exploiting this vulnerability

Evidence notes

The CVE record and NVD vulnerability detail page provide information on the vulnerability, its severity, and affected versions. The vulnerability affects Google Chrome prior to version 147.0.7727.101. Defenders should verify and update Google Chrome to prevent potential data leaks. The CVE record was published on 2026-04-15T20:16:41.093Z and has not been modified since then. The NVD vulnerability detail page provides additional information on the vulnerability and its severity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-6313 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-6313

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

  • CVE-2026-6313 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-6313

    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.