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CVE-2026-113103 Google CVE debrief

CVE-2026-113103 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 2026-10-20T21:02:38.702Z and has not been modified since then. This use-after-free vulnerability in WebProtect allows remote attackers to execute arbitrary code inside the sandbox via a crafted HTML page. Defenders should prioritize verifying Chrome version and updating to the latest version. Further verification is required to determine the actual impact and affected scope.

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 or earlier, should assess exposure and prioritize updating to the latest version. Defenders should verify Chrome version and update to 156.0.8078.47 or later. Further verification is required to determine the actual impact and affected scope.

Why it matters

CVE-2026-113103 is a use-after-free vulnerability in WebProtect in Google Chrome prior to 156.0.8078.47. Defenders should prioritize verifying Chrome version and updating to the latest version.

  • Remote attackers may exploit this vulnerability to execute arbitrary code inside the sandbox.
  • Defenders should verify Chrome version and update to 156.0.8078.47 or later.
  • Further verification is required to determine the actual impact and affected scope.

Technical summary

A use-after-free vulnerability exists in WebProtect in Google Chrome prior to 156.0.8078.47. A remote attacker could exploit this vulnerability to execute arbitrary code inside the sandbox via a crafted HTML page. The vulnerability allows remote attackers to execute arbitrary code inside the sandbox. Defenders should prioritize verifying Chrome version and updating to 156.0.8078.47 or later. Further verification is required to determine the actual impact and affected scope. The CVE Program and NVD records indicate that the vulnerability exists in Google Chrome prior to 156.0.8078.47.

Defensive priority

Defenders should prioritize verifying Chrome version and updating to 156.0.8078.47 or later.

Recommended defensive actions

  • Verify Chrome version and update to 156.0.8078.47 or later
  • Monitor for suspicious activity
  • Implement compensating controls
  • Review vendor guidance and affected scope
  • Conduct exposure review
  • Track exceptions and retest remediated assets
  • technicalSummary

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further verification is required to determine the actual impact and affected scope. The CVE Program and NVD records indicate that the vulnerability exists in Google Chrome prior to 156.0.8078.47. Defenders should verify Chrome version and update to 156.0.8078.47 or later. 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-2026-113103 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-113103

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

  • CVE-2026-113103 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-113103

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

Supplemental references

  • CVE-2026-113103

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/113xxx/CVE-2026-113103.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/500474551

    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.