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CVE-2026-113042 Google CVE debrief

CVE-2026-113042 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 2026-10-20T21:02:17.681Z and has not been modified since then. This use-after-free vulnerability in Google Chrome Extensions allows remote attackers to execute arbitrary code inside the sandbox via a crafted HTML page. Chrome users should verify and update to the latest version to prevent potential attacks. The vulnerability has a medium severity level according to Chromium security.

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 update to the latest version. Chrome operators and security teams should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. They should also plan vendor-supported updates or mitigations through normal change control where exposure is confirmed and review compensating controls for exposed and

Why it matters

CVE-2026-113042 is a use-after-free vulnerability in Google Chrome Extensions that allows remote attackers to execute arbitrary code inside the sandbox. Chrome users should assess exposure and update to the latest version to prevent potential attacks.

  • Remote attackers may execute arbitrary code inside the sandbox
  • Chrome users may be vulnerable to attacks targeting this vulnerability
  • Defenders should verify and update Chrome to the latest version

Technical summary

The vulnerability is a use-after-free issue in Google Chrome Extensions, which allows remote attackers to execute arbitrary code inside the sandbox via a crafted HTML page. This issue has a medium severity level according to Chromium security. Chrome users should assess exposure and update to the latest version to prevent potential attacks. The CVE record and NVD entry provide details on the vulnerability. Defenders should verify and update Chrome to the latest version to mitigate potential attacks targeting this vulnerability.

Defensive priority

High priority for Chrome users to verify and update to the latest version.

Recommended defensive actions

  • Verify and update Google Chrome to the latest version
  • Assess exposure to version 156.0.8078.47 and earlier
  • Monitor for potential attacks targeting this vulnerability
  • 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
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the use-after-free vulnerability in Google Chrome Extensions. The vulnerability allows remote attackers to execute arbitrary code inside the sandbox via a crafted HTML page.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-113042 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-113042

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

  • CVE-2026-113042 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-113042

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

Supplemental references

  • CVE-2026-113042

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/113xxx/CVE-2026-113042.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/517486906

    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.