CVE-2026-113165 Google CVE debrief

Who should care

Defenders responsible for managing Google Chrome deployments on Mac systems should assess exposure and prioritize updates to mitigate this vulnerability. Additionally, security teams monitoring for potential threats and enforcing sandboxing policies should be aware of this issue.

Why it matters

CVE-2026-113165 is a use-after-free vulnerability in Google Chrome's Core component on Mac systems, allowing remote attackers to execute arbitrary code within the sandbox via a crafted HTML page. Defenders should prioritize updating Google Chrome to version 156.0.8078.47 or later and monitor for suspicious activity.

• Remote code execution within the sandbox, potentially leading to further exploitation.
• Elevation of privileges within the browser, allowing for more severe attacks.
• Data theft or manipulation through crafted HTML pages.
• Potential disruption of service due to abnormal browser behavior.

Technical summary

The vulnerability is a use-after-free issue in the Core component of Google Chrome on Mac systems. This occurs when the browser attempts to access memory that has already been freed, allowing an attacker to execute arbitrary code within the sandbox by providing a specially crafted HTML page. The issue was classified as Medium severity by Chromium and was reported through the Chromium security program. The vulnerability allows remote attackers to execute arbitrary code within the sandbox via a crafted HTML page, emphasizing the need for defenders to prioritize updates to Google Chrome on Mac systems.

Defensive priority

Defenders should prioritize updating Google Chrome to version 156.0.8078.47 or later on Mac systems to mitigate this vulnerability. Additionally, monitoring for suspicious HTML page activity and enforcing sandboxing can help reduce the risk.

Recommended defensive actions

• Update Google Chrome to version 156.0.8078.47 or later on affected Mac systems.
• Monitor for suspicious activity related to crafted HTML pages.
• Enforce sandboxing for Google Chrome on Mac systems.
• 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 source item provide details on the vulnerability, including its existence in Google Chrome on Mac systems prior to version 156.0.8078.47. The Chromium security severity is classified as Medium.

Sources and references

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.