CVE-2026-11283: Chrome on macOS Shortcuts Bypass Vulnerability – Patch Guide

Technical summary

CVE-2026-11283 is an input validation vulnerability (CWE-20) in the Shortcuts integration within Google Chrome for macOS. The flaw permits a remote attacker to circumvent navigation controls by supplying a malicious file that exploits insufficient validation of untrusted input. The Shortcuts framework on macOS allows automation routines to invoke Chrome, and this vulnerability allows an attacker to manipulate that invocation to force navigation to unintended URLs. The attack surface is network-accessible but requires user action (file interaction) to trigger. Google classified this as low severity within Chromium's security model; however, the CVSS 3.1 score of 6.5 reflects moderate impact due to the integrity threat.

Business impact

The primary business risk is user redirect and phishing amplification. An attacker could distribute malicious files (via email, downloads, or collaboration tools) that, when processed through macOS Shortcuts and Chrome, silently redirect users to credential-harvesting or malware distribution sites. For organizations relying on macOS and Chrome, this increases the attack surface for social engineering campaigns. Compliance-conscious organizations should note that unpatched systems may introduce audit findings related to known vulnerabilities. The impact is limited to macOS Chrome users—Windows and Linux Chrome users are unaffected.

Affected systems

Google Chrome on macOS versions prior to 149.0.7827.53 are vulnerable. The vulnerability is specific to the integration between macOS Shortcuts and Chrome; it does not affect Chrome on Windows or Linux. Any macOS user or organization running Chrome below the patched version should assess exposure, particularly teams that permit file downloads or macOS automation workflows.

Exploitability

Exploitability is moderate. The attack requires a user to open a malicious file that the attacker has distributed. There is no network-based remote code execution or privilege escalation; the attacker cannot force the interaction. However, the simplicity of file-based distribution (email attachment, download link, USB drive) and the lack of any special user privileges make this practical for social engineering campaigns. No public exploit code is known to be widely available, and the vulnerability has not been added to CISA's Known Exploited Vulnerabilities (KEV) catalog.

Remediation

Update Google Chrome on macOS to version 149.0.7827.53 or later. Users should enable automatic Chrome updates to receive patches promptly. System administrators managing macOS fleets should enforce minimum Chrome version requirements through Mobile Device Management (MDM) or equivalent endpoint controls. Additionally, user awareness training regarding opening suspicious files—particularly those claiming to be automation scripts or macOS shortcuts—can reduce social engineering risk.

Patch guidance

Apply Chrome update 149.0.7827.53 or later on all macOS systems. Verify the update by navigating to Chrome menu > About Google Chrome; the browser will check for and install updates automatically. For enterprise environments, confirm deployment via MDM or software distribution tools and track version compliance. No workarounds are available other than updating. The patch is straightforward and does not require system reboots or application configuration changes.

Detection guidance

Monitor Chrome update status across macOS endpoints to identify machines running versions prior to 149.0.7827.53. Review file download and execution logs for suspicious .shortcut files or automation scripts distributed via email or file-sharing platforms. Endpoint detection and response (EDR) solutions should flag unusual Shortcuts-to-Chrome invocations with unexpected URL parameters. User education is important: encourage reporting of suspicious files or unexpected browser redirects. Web proxy logs may show sudden redirects to phishing or malware domains originating from Chrome on macOS.

Why prioritize this

This vulnerability should be prioritized moderately. While the CVSS score is 6.5 (medium severity) and Chromium designated it as low-severity, it represents a practical social engineering vector on macOS. The lack of KEV listing suggests it is not yet widely exploited in the wild, but its reliance on user action and file distribution makes it a classic phishing/redirect risk. Organizations with significant macOS user bases, particularly those handling sensitive customer data or financial transactions, should patch within 2–3 weeks. Those in high-security sectors or with limited macOS adoption can deprioritize slightly but should not defer indefinitely.

Risk score, explained

The CVSS 3.1 score of 6.5 reflects a network-accessible attack (AV:N) with low attack complexity (AC:L) and no privileges required (PR:N), but requires user interaction (UI:R). The impact assessment is high integrity (I:H) because the attacker can manipulate navigation to unintended sites, but no confidentiality or availability impact is expected. The score appropriately captures that this is not a critical remote code execution or data exfiltration vulnerability, but it is more serious than a minor information disclosure, making it a legitimate medium-severity concern for macOS Chrome users.

Frequently asked questions