# CVE-2026-113343: Google Chrome memory corruption in Sandbox code execution

Source: https://junglewise.ai/threats/cve-2026-113343-memory-corruption-in-sandbox-in-google-chrome-prior-to-156-0  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-113343 · Severity: info · Published 2026-10-20

Google Chrome is a web browser used by billions of people worldwide to view websites and web applications. A memory corruption flaw in Chrome's sandbox security mechanism allows a remote attacker to execute arbitrary code within the sandboxed environment by tricking a user into visiting a malicious webpage. While the exploit runs inside the sandbox rather than at full system privileges, it could be used as part of a two-stage attack to compromise the browser or system.

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

## Quick answers

**Is CVE-2026-113343 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-113343 being exploited in the wild.

**How severe is CVE-2026-113343?** Informational severity, published 20 October 2026.

**Which products and versions are affected?** Google Chrome prior to 156.0.8078.47.

**Is there a fix for CVE-2026-113343?** Yes: fixed in Chrome 156.0.8078.47 (Linux), 156.0.8078.48 (Windows/Mac). Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-113343 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-113343?** 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 156.0.8078.47 (Linux), 156.0.8078.48 (Windows/Mac)

## Technical details

Memory corruption in Chrome's Sandbox component allows remote code execution via a crafted HTML page. The vulnerability affects Chrome versions prior to 156.0.8078.47 and requires user interaction (visiting a malicious webpage) with a network attack vector. An attacker gains code execution within the sandbox security boundary; exploitation is not known to have occurred in the wild.

## Affected products

- Google Chrome prior to 156.0.8078.47

## Timeline

- 2026-10-20: disclosed

## References

- [https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html](https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html)
- [https://issues.chromium.org/issues/502376419](https://issues.chromium.org/issues/502376419)

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