# CVE-2026-11247: Google Chrome for Android cross-origin data leak in CustomTabs

Source: https://junglewise.ai/threats/cve-2026-11247-google-chrome-for-android-cross-origin-data-leak-in-customtabs  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-05. Updated: 2026-06-05  
License: CC BY 4.0 with a link back

CVE-2026-11247 · Severity: info · CVSS 3.3 · Published 2026-06-05

A security issue in Google Chrome for Android could allow a malicious website to access data from other websites. This occurs through the CustomTabs feature, which apps use to display web content. An attacker could use a specially crafted webpage to bypass security boundaries and potentially leak sensitive user information.

Technologies: [Google Chrome](https://junglewise.ai/threats/technologies/chrome). Vendors: [Google](https://junglewise.ai/threats/vendors/google).

## Quick answers

**Is CVE-2026-11247 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-11247 being exploited in the wild.

**How severe is CVE-2026-11247?** Informational severity, with a CVSS score of 3.3, published 5 June 2026.

**Which products and versions are affected?** Google Chrome prior to 149.0.7827.53.

**Is there a fix for CVE-2026-11247?** A patch was published on 2026-06-02: Chrome 149 promoted to stable channel Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-11247 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-11247?** Check whether you run Google Chrome at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A vulnerability exists in the CustomTabs component of Google Chrome for Android due to insufficient policy enforcement. A remote attacker can exploit this by enticing a user to visit a specially crafted HTML page. Successful exploitation allows the attacker to bypass cross-origin restrictions and leak data from different origins. The issue is fixed in version 149.0.7827.53. The vulnerability is categorized by Chromium as Low severity.

## Affected products

- Google Chrome for Android prior to 149.0.7827.53

## Timeline

- 2026-06-02: patched: Chrome 149 promoted to stable channel
- 2026-06-05: disclosed: NVD publication date

## References

- [https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html](https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html)
- [https://issues.chromium.org/issues/497865734](https://issues.chromium.org/issues/497865734)

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