# CVE-2026-8576: Google Chrome CORS data leakage on Linux and ChromeOS

Source: https://junglewise.ai/threats/cve-2026-8576-google-chrome-cors-data-leakage-on-linux-and-chromeos  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-14. Updated: 2026-05-21  
License: CC BY 4.0 with a link back

CVE-2026-8576 · Severity: medium · CVSS 4.3 · Published 2026-05-14

A security vulnerability in Google Chrome on Linux and ChromeOS could allow a malicious website to access data from other websites. This occurs due to a flaw in how the browser handles Cross-Origin Resource Sharing (CORS), which is a security mechanism designed to prevent unauthorized data sharing between different domains. An attacker could exploit this by tricking a user into visiting a specially crafted webpage, potentially leading to the exposure of sensitive user information.

Technologies: [Google Chrome](https://junglewise.ai/threats/technologies/chrome), [Google Chrome Os](https://junglewise.ai/threats/technologies/chrome-os), [Google ChromeOS](https://junglewise.ai/threats/technologies/chromeos), [Linux Kernel](https://junglewise.ai/threats/technologies/kernel). Vendors: [Google](https://junglewise.ai/threats/vendors/google), [Linux](https://junglewise.ai/threats/vendors/linux).

## Quick answers

**Is CVE-2026-8576 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-8576 being exploited in the wild.

**How severe is CVE-2026-8576?** Medium severity, with a CVSS score of 4.3, published 14 May 2026.

**Which products and versions are affected?** Google Chrome prior to 148.0.7778.168, Prior to 148.0.7778.168; Google ChromeOS prior to 148.0.7778.168.

**Is there a fix for CVE-2026-8576?** A patch was published on 2026-05-12: Stable channel update released for desktop. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-8576 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-8576?** Check whether you run Google Chrome, Google Chrome Os, Google ChromeOS or one of the others listed 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

An inappropriate implementation vulnerability exists in the Cross-Origin Resource Sharing (CORS) mechanism of Google Chrome for Linux and ChromeOS. The flaw allows a remote attacker to bypass origin-based security restrictions and leak data from other origins. To exploit the vulnerability, an attacker must entice a user to visit a malicious website containing a specially crafted HTML page. Successful exploitation results in the unauthorized retrieval of cross-origin data, though it does not typically allow for code execution or system modification. The issue is addressed in Chrome version 148.0.7778.168.

## Affected products

- Google Chrome Prior to 148.0.7778.168

## Timeline

- 2026-05-12: patched: Stable channel update released for desktop.
- 2026-05-14: disclosed: CVE published to NVD.

## References

- [https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html](https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html)
- [https://issues.chromium.org/issues/496231853](https://issues.chromium.org/issues/496231853)

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