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PatchSiren cyber security CVE debrief

CVE-2026-113278 Google CVE debrief

CVE-2026-113278 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 2026-10-20T21:02:15.359Z and has not been modified since then. This use-after-free vulnerability in Google Chrome Extensions could allow remote attackers to execute arbitrary code inside the sandbox via a crafted HTML page. Users should verify their version and prioritize remediation if necessary. The Chromium security severity is rated as Medium.

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 versions prior to 156.0.8078.47, should assess exposure and prioritize remediation. This includes operators, platform administrators, and security teams responsible for managing Google Chrome deployments. The vulnerability could allow remote attackers to execute arbitrary code inside the sandbox, posing a significant risk to affected systems.

Why it matters

CVE-2026-113278 is a use-after-free vulnerability in Google Chrome Extensions that could allow remote attackers to execute arbitrary code inside the sandbox. Google Chrome users, especially those with versions prior to 156.0.8078.47, should assess exposure and prioritize remediation.

  • Potential remote code execution inside the sandbox
  • Exposure of Google Chrome users to potential attacks
  • Need for version verification and potential updates
  • Possible security bypass via crafted HTML pages

Technical summary

A use-after-free vulnerability exists in Google Chrome Extensions prior to version 156.0.8078.47. This vulnerability could allow a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. The affected product is Google Chrome, and the vulnerability has a Medium security severity rating. Users with versions prior to 156.0.8078.47 should assess exposure and prioritize remediation. The source details are limited, and defenders should verify the affected scope and severity based on the official advisory.

Defensive priority

High

Recommended defensive actions

  • Update Google Chrome to version 156.0.8078.47 or later
  • Review and verify the version of Google Chrome in use
  • Assess exposure and prioritize remediation for affected systems
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
  • 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

Evidence notes

The CVE record and NVD entry indicate a use-after-free vulnerability in Google Chrome Extensions prior to version 156.0.8078.47. The Chromium security severity is rated as Medium. This vulnerability could allow a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. The source details are limited, and defenders should verify the affected scope and severity based on the official advisory.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-113278 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-113278

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

  • CVE-2026-113278 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-113278

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

Supplemental references

  • CVE-2026-113278

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/113xxx/CVE-2026-113278.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/514080341

    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.