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CVE-2026-113037 Google CVE debrief

CVE-2026-113037 debrief based on CVE Program and NVD records. Google Chrome users should assess exposure to version 156.0.8078.47 and earlier. The CVE record was published on 2026-10-20T21:02:30.382Z and has not been modified since then. This use-after-free vulnerability in WebSockets could allow a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. Users should review system logs for potential exploitation attempts and assess exposure of Chrome version 156.0.8078.47 and earlier in their environment.

Vendor
Google
Product
Chrome
CVSS
Unknown
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-20
Original CVE updated
2026-10-20
Advisory published
2026-10-20
Advisory updated
2026-10-20

Who should care

Google Chrome users, particularly those with version 156.0.8078.47 and earlier, should assess exposure and consider updating to the latest version. System administrators and security teams should review system logs for potential exploitation attempts and verify Chrome version exposure in their environment.

Why it matters

CVE-2026-113037 is a use-after-free vulnerability in WebSockets in Google Chrome prior to 156.0.8078.47. This vulnerability could allow a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. Google Chrome users, particularly those with version 156.0.8078.47 and earlier, should assess exposure and consider updating to the latest version.

  • Potential code execution inside the sandbox
  • Required verification of Chrome version and exposure
  • Possible exploitation attempts via crafted HTML pages

Technical summary

A use-after-free vulnerability exists in WebSockets in Google Chrome prior to 156.0.8078.47. This vulnerability could allow a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. The vulnerability has a Medium severity level according to Chromium. Users should assess exposure and consider updating to the latest version. Review system logs for potential exploitation attempts and verify Chrome version exposure in the environment. This vulnerability could allow a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page.

Defensive priority

Medium

Recommended defensive actions

  • Update Google Chrome to version 156.0.8078.47 or later
  • Review system logs for potential exploitation attempts
  • Assess exposure of Chrome version 156.0.8078.47 and earlier in your environment
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and NVD entry indicate a use-after-free vulnerability in WebSockets in Google Chrome prior to 156.0.8078.47. Chromium security severity is Medium. The vulnerability could allow a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. Defenders should verify Chrome version exposure and review system logs for potential exploitation attempts.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-113037 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-113037

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

  • CVE-2026-113037 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-113037

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

Supplemental references

  • CVE-2026-113037

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/113xxx/CVE-2026-113037.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://issues.chromium.org/issues/560939312

    Supplemental source

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.