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CVE-2026-113191 Google CVE debrief

CVE-2026-113191 debrief based on CVE Program and NVD records. Google Chrome on Mac prior to 156.0.8078.47 is vulnerable to a use-after-free issue in Internals, allowing remote attackers to potentially execute arbitrary code inside the sandbox via crafted HTML pages. This vulnerability, categorized as a use-after-free issue in the Internals component, poses a significant risk as it could enable attackers to execute arbitrary code within the sandbox, potentially leading to unauthorized actions. Defenders should assess exposure, update Chrome versions, monitor for exploitation attempts, and review sandbox configurations to mitigate potential impacts.

Vendor
Google
Product
Chrome
CVSS
Unknown
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-20
Original CVE updated
2026-10-21
Advisory published
2026-10-20
Advisory updated
2026-10-21

Who should care

Defenders responsible for managing Google Chrome deployments on Mac systems should assess exposure and update to version 156.0.8078.47 or later. Security teams should monitor for potential exploitation attempts and review sandbox configurations.

Why it matters

CVE-2026-113191 is a use-after-free vulnerability in Google Chrome's Internals on Mac prior to version 156.0.8078.47. Defenders should assess exposure, update Chrome versions, monitor for exploitation attempts, and review sandbox configurations.

  • Remote attackers may attempt to execute arbitrary code inside the sandbox.
  • Successful exploitation could lead to unauthorized actions within the sandbox.
  • Defenders should verify Chrome versions and update to 156.0.8078.47 or later.
  • Security monitoring and sandbox configuration reviews are recommended.

Technical summary

A use-after-free vulnerability exists in the Internals component of Google Chrome on Mac prior to version 156.0.8078.47. This issue allows remote attackers to potentially execute arbitrary code inside the sandbox via crafted HTML pages. The vulnerability is a result of improper handling of memory, leading to a use-after-free condition that can be exploited by attackers through crafted HTML pages, potentially resulting in unauthorized code execution within the sandbox environment. Defenders should assess exposure, update Chrome versions, monitor for exploitation attempts, and review sandbox configurations to mitigate potential impacts.

Defensive priority

Medium

Recommended defensive actions

  • Assess exposure: Review and update Google Chrome on Mac to version 156.0.8078.47 or later.
  • Verify version: Check current Chrome version and update if necessary.
  • Monitor for exploitation attempts: Implement security monitoring to detect potential exploitation attempts.
  • Review sandbox configurations: Ensure sandbox configurations are properly set up and enforced.
  • Track exceptions and retest remediated assets.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE Program and NVD records indicate a use-after-free vulnerability in Google Chrome's Internals on Mac prior to version 156.0.8078.47. This issue allows remote attackers to potentially execute arbitrary code inside the sandbox via crafted HTML pages.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-113191 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-113191

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

  • CVE-2026-113191 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-113191

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

Supplemental references

  • CVE-2026-113191

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/113xxx/CVE-2026-113191.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/441089142

    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.