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CVE-2026-9897 Google CVE debrief

A use-after-free vulnerability in the DOM implementation of Google Chrome prior to version 148.0.7778.216 enables remote code execution within the browser sandbox. The flaw, assigned CWE-416 and rated High severity by Chromium, can be triggered by a crafted HTML page. Google addressed this issue in a stable channel update released May 28, 2026.

Vendor
Google
Product
Chrome
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-28
Original CVE updated
2026-07-21
Advisory published
2026-05-28
Advisory updated
2026-07-21

Who should care

Organizations with Chrome deployments, security teams managing browser attack surface, and incident responders investigating browser-based compromise vectors.

Technical summary

The vulnerability exists in Chrome's DOM implementation where a use-after-free condition permits memory corruption. An attacker can exploit this by delivering a malicious HTML page that manipulates DOM object lifecycles, resulting in arbitrary code execution within the renderer sandbox. The fix in Chrome 148.0.7778.216 resolves the underlying memory management flaw.

Defensive priority

high

Recommended defensive actions

  • Upgrade Google Chrome to version 148.0.7778.216 or later immediately.
  • Verify automatic update settings are enabled for Chrome installations across endpoints.
  • Review browser-based threat detection logs for anomalous HTML document handling or renderer crashes prior to patching.
  • Consider site isolation policies and sandbox hardening as compensating controls where immediate patching is delayed.

Evidence notes

Vulnerability description and affected version range sourced from NVD record and Chrome Release Blog. CWE-416 classification confirmed via NVD weaknesses field. Chromium severity rating of High per official description.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-9897 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-9897

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

  • CVE-2026-9897 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-9897

    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.