# CVE-2026-126900: Google Chrome use after free in CSS

Source: https://junglewise.ai/threats/cve-2026-126900-use-after-free-in-css-in-google-chrome-prior-to-157-0-8103-78  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-11. Updated: 2026-11-12  
License: CC BY 4.0 with a link back

CVE-2026-126900 · Severity: info · Published 2026-11-11

Google Chrome is a web browser used by billions worldwide. A use-after-free vulnerability in Chrome's CSS engine allows remote attackers to execute arbitrary code within the browser sandbox by tricking users into visiting a malicious HTML page, potentially leading to data theft or further system compromise.

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

## Quick answers

**Is CVE-2026-126900 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-126900 being exploited in the wild.

**How severe is CVE-2026-126900?** Informational severity, published 11 November 2026.

**Which products and versions are affected?** Google Chrome prior to 157.0.8103.78.

**Is there a fix for CVE-2026-126900?** Yes: fixed in Chrome 157.0.8103.78 for Linux, 157.0.8103.78/.79 for Windows and Mac. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-126900 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-126900?** 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.

## How to fix

- Fixed in Chrome 157.0.8103.78 for Linux, 157.0.8103.78/.79 for Windows and Mac

## Technical details

A use-after-free vulnerability exists in the CSS component of Google Chrome prior to version 157.0.8103.78/79. The vulnerability can be exploited remotely via a crafted HTML page, allowing code execution within the browser's sandbox. The fix was applied in Chrome 157.0.8103.78 for Linux and 157.0.8103.78/.79 for Windows and Mac.

## Affected products

- Google Chrome prior to 157.0.8103.78

## Timeline

- 2026-11-11: disclosed
- 2026-10-16: other: Vulnerability reported to Google

## References

- [https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop_01744469280.html](https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop_01744469280.html)
- [https://issues.chromium.org/issues/574409610](https://issues.chromium.org/issues/574409610)

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