CVE-2026-13022: Google Chrome Autofill Data Leak Flaw

CVE-2026-13022 Overview

CVE-2026-13022 is an inappropriate implementation vulnerability in the Autofill component of Google Chrome. The flaw affects Chrome versions prior to 149.0.7827.197. A remote attacker who has already compromised the renderer process can leak cross-origin data by serving a crafted HTML page. Google's Chromium security team rates this issue as High severity. The vulnerability undermines the Same-Origin Policy boundary that Chrome enforces between web origins through the Autofill feature.

Critical Impact
An attacker with a compromised renderer process can exfiltrate cross-origin data from Autofill, exposing form contents that may include personal details, addresses, payment information, and credentials saved across unrelated origins.

Affected Products

Google Chrome versions prior to 149.0.7827.197
Chromium-based browsers that incorporate the affected Autofill implementation
Desktop Chrome Stable channel builds preceding the June 2026 security update

Discovery Timeline

2026-06-24 - CVE-2026-13022 published to the National Vulnerability Database
2026-06-25 - Last updated in NVD database

Technical Details for CVE-2026-13022

Vulnerability Analysis

The vulnerability resides in Chrome's Autofill subsystem, which suggests form values and stored data when a user interacts with input fields. The implementation does not adequately separate Autofill data scoped to one origin from access requests issued through a compromised renderer. As a result, an attacker who already controls a renderer process can request or observe Autofill state tied to other origins. Chromium tracks the issue as Chromium Issue #516734537, and the fix shipped in the Chrome Stable channel update. The EPSS score is 0.163%, placing the likelihood of near-term exploitation in the lower range relative to other published CVEs.

Root Cause

The root cause is an inappropriate implementation in the Autofill code path that fails to enforce cross-origin isolation. Chrome's site isolation model assumes the browser process mediates access to sensitive form data. The Autofill logic does not consistently validate that requests originate from the same origin as the stored data, allowing a malicious renderer to bypass that boundary.

Attack Vector

Exploitation requires two stages. First, an attacker must compromise the renderer process, typically through a separate memory corruption or sandbox-bound vulnerability. Second, the attacker delivers a crafted HTML page that triggers Autofill interactions designed to extract data scoped to other origins. The result is information disclosure across the Same-Origin Policy boundary without requiring elevated browser privileges.

No verified proof-of-concept code is publicly available. See the Chromium issue tracker entry for restricted technical details.

Detection Methods for CVE-2026-13022

Indicators of Compromise

Chrome browser processes running versions earlier than 149.0.7827.197 on managed endpoints.
Renderer process crashes or anomalous child-process spawning that may indicate a prior renderer compromise used as a precursor to this attack.
Outbound HTTP/HTTPS traffic carrying form-like field values to domains unrelated to active user navigation.

Detection Strategies

Inventory installed Chrome versions across the fleet and flag any host running a build prior to 149.0.7827.197.
Correlate browser exploitation indicators, such as renderer crashes and unexpected chrome.exe child processes, with subsequent outbound data transfers.
Monitor for visits to newly registered or low-reputation domains that load complex HTML forms, since exploitation requires a crafted page delivered to the victim.

Monitoring Recommendations

Forward Chrome update telemetry and version inventory to centralized logging for continuous compliance tracking.
Enable browser process auditing on endpoints and alert on unusual renderer behavior or sandbox escapes.
Track DNS and proxy logs for connections to domains hosting suspicious autofill-triggering pages identified by threat intelligence feeds.

How to Mitigate CVE-2026-13022

Immediate Actions Required

Update Google Chrome to version 149.0.7827.197 or later on all desktop endpoints.
Restart the browser after the update to ensure the patched binaries are loaded into memory.
Verify update deployment through enterprise management consoles or scripted version checks across the environment.

Patch Information

Google released the fix in the Chrome Stable channel update documented at the Chrome Releases blog. Administrators should ensure that managed Chrome installations are configured to apply updates automatically. Chromium-based browsers that derive from the same source tree should be updated once their vendors incorporate the upstream fix.

Workarounds

Disable Autofill for forms and payment methods through Chrome settings or enterprise policy where rapid patching is not feasible.
Restrict browsing to known-trusted sites using URL filtering until all endpoints are confirmed updated.
Apply Chrome enterprise policies that enforce minimum browser versions and block execution of outdated builds.

bash

# Enforce Chrome auto-update and disable Autofill via enterprise policy (Linux example)
sudo tee /etc/opt/chrome/policies/managed/cve-2026-13022.json <<'EOF'
{
  "AutofillAddressEnabled": false,
  "AutofillCreditCardEnabled": false,
  "PasswordManagerEnabled": false,
  "ComponentUpdatesEnabled": true
}
EOF