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CVE-2026-113138 Google CVE debrief

CVE-2026-113138 debrief based on CVE Program and NVD records. Google Chrome users should assess exposure to version 156.0.8078.47 or earlier. The CVE record was published on 2026-10-20T21:02:30.735Z and has not been modified since then. The vulnerability is a memory corruption issue in WebAppInstalls, which could potentially allow remote attackers to execute arbitrary code outside the sandbox via a crafted HTML page. Defenders should verify Chrome version, assess exposure, and consider compensating controls.

Vendor
Google
Product
Chrome
CVSS
Unknown
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-20
Original CVE updated
2026-10-22
Advisory published
2026-10-20
Advisory updated
2026-10-22

Who should care

Google Chrome users, particularly those with version 156.0.8078.47 or earlier, should assess exposure. Defenders should verify Chrome version to prevent potential code execution, assess exposure to vulnerable versions, and consider compensating controls for unpatched systems.

Why it matters

CVE-2026-113138 is a memory corruption vulnerability in WebAppInstalls in Google Chrome prior to 156.0.8078.47. Defenders should verify Chrome version, assess exposure, and consider compensating controls.

  • Verify Chrome version to prevent potential code execution
  • Assess exposure to vulnerable versions
  • Consider compensating controls for unpatched systems

Technical summary

A memory corruption vulnerability exists in WebAppInstalls in Google Chrome prior to 156.0.8078.47. This vulnerability could potentially allow remote attackers to execute arbitrary code outside the sandbox via a crafted HTML page. Defenders should prioritize verifying Chrome version 156.0.8078.47 or later and consider compensating controls for unpatched systems. The CVE record was published on 2026-10-20T21:02:30.735Z and has not been modified since then. The vulnerability is a memory corruption issue in WebAppInstalls.

Defensive priority

Defenders should prioritize verifying Chrome version 156.0.8078.47 or later and consider compensating controls.

Recommended defensive actions

  • Verify Chrome version 156.0.8078.47 or later
  • Consider compensating controls
  • Monitor for updates from Google
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
  • 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 Program and NVD records indicate a memory corruption vulnerability in WebAppInstalls in Google Chrome prior to 156.0.8078.47. The vulnerability could potentially allow remote attackers to execute arbitrary code outside the sandbox via a crafted HTML page. Defenders should verify Chrome version to prevent potential code execution, assess exposure to vulnerable versions, and consider compensating controls for unpatched systems.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-113138 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-113138

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

  • CVE-2026-113138 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-113138

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

Supplemental references

  • CVE-2026-113138

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/113xxx/CVE-2026-113138.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/561396577

    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.