CVE-2026-79067 Overview
CVE-2026-79067 is a missing authorization vulnerability in the Network component of Google Chrome versions prior to 152.0.7977.65. A remote attacker who has already compromised the renderer process can bypass system access restrictions by delivering a crafted HTML page. Chromium classifies the security severity as Medium.
The flaw maps to CWE-862: Missing Authorization. Exploitation requires an existing foothold in the sandboxed renderer, which limits opportunistic attacks but pairs well with a separate renderer compromise to widen impact.
Critical Impact
Attackers chaining a renderer compromise with CVE-2026-79067 can bypass network-layer authorization checks intended to enforce system access boundaries in Chrome.
Affected Products
- Google Chrome desktop versions prior to 152.0.7977.65
- Chromium-based browsers that inherit the vulnerable Network stack
- Chrome Stable channel on Windows, macOS, and Linux
Discovery Timeline
- 2026-08-25 - CVE-2026-79067 published to NVD
- 2026-08-26 - Last updated in NVD database
Technical Details for CVE-2026-79067
Vulnerability Analysis
The vulnerability resides in Chrome's Network service, which brokers network operations on behalf of renderer processes. Chrome's multi-process architecture depends on the Network service to enforce authorization checks that the sandboxed renderer cannot be trusted to perform.
An authorization check is missing on a code path reachable from a compromised renderer. As a result, requests originating from a crafted HTML page can traverse boundaries that should have been rejected. The outcome is a bypass of system access restrictions enforced above the renderer sandbox.
The issue is tracked in Chromium Issue Tracker #513049445 and remediated in the Google Chrome Stable Update.
Root Cause
The root cause is an absent authorization check in the Network component [CWE-862]. Trusted-caller assumptions were applied to a path that a compromised renderer can invoke, so the Network service performed the requested operation without validating whether the caller was permitted to access the target resource.
Attack Vector
Exploitation is a two-stage operation. First, the attacker compromises the renderer process, typically through a separate memory-safety or type-confusion bug reachable from web content. Second, the compromised renderer sends crafted requests to the Network service via a malicious HTML page, invoking the unauthorized code path to bypass system access restrictions.
No verified public exploit is available for CVE-2026-79067. Refer to the Chromium Issue Tracker entry for technical details as they become public.
Detection Methods for CVE-2026-79067
Indicators of Compromise
- Chrome renderer processes spawning unexpected child processes or issuing anomalous IPC traffic to the Network service
- Outbound network connections from Chrome to internal or restricted resources that fall outside normal browsing telemetry
- Endpoints running Chrome builds earlier than 152.0.7977.65 after the vendor patch window
Detection Strategies
- Inventory installed Chrome versions across managed endpoints and flag any build below 152.0.7977.65
- Correlate browser process telemetry with network egress logs to identify renderer-driven access to restricted internal services
- Alert on Chrome updater failures or policies that suppress automatic updates on production endpoints
Monitoring Recommendations
- Ingest browser and endpoint process telemetry into a centralized data lake for cross-source correlation
- Track Chrome version drift over time and prioritize hosts that repeatedly miss the Stable channel update
- Monitor for renderer processes making network requests inconsistent with the parent tab's origin
How to Mitigate CVE-2026-79067
Immediate Actions Required
- Update Google Chrome to version 152.0.7977.65 or later on all managed endpoints
- Enforce automatic Chrome updates through enterprise policy and verify successful rollout
- Restart browser sessions after the update so the patched Network service binary is loaded
Patch Information
Google addressed CVE-2026-79067 in Chrome Stable 152.0.7977.65. See the Google Chrome Stable Update announcement for the full advisory. Chromium-based browsers should apply the corresponding upstream fix from Chromium Issue #513049445.
Workarounds
- No vendor-supplied workaround exists; patching is the only supported remediation
- Restrict browsing on sensitive endpoints to trusted destinations until Chrome is updated
- Segment endpoints from internal management interfaces that rely on network-layer authorization from the browser host
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
