# CVE-2026-118359 — Google Chrome

> As of 2026-11-07, CVE-2026-118359 is a HIGH-severity vulnerability in Google Chrome, CVSS v3.1 8.8, EPSS 0.2% (19.8th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-118359, most recently “Multiple Vulnerabilities in Google Chrome prior to 156.0.8078.73 (52 CVEs incl. CVE-2026-118306 FileSystem sandbox escape) - HKCERT Alert A26-10-59”.

**Last updated:** 2026-10-28

## What is CVE-2026-118359?

Memory corruption in V8 in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)

The record classifies CVE-2026-118359 under weakness class [CWE-119](https://intel.threadlinqs.com/cwe/CWE-119). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 11 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 8.8 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 19.8% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 5.2/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-10-27, last modified 2026-10-28

## Is CVE-2026-118359 being exploited?

It currently carries a trending score of 40 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [Google](https://intel.threadlinqs.com/vendors/google): Chrome

## How to fix CVE-2026-118359

No vendor patch reference has been recorded for CVE-2026-118359 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-118359

1 tracked threat in the Threadlinqs corpus references CVE-2026-118359, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Multiple Vulnerabilities in Google Chrome prior to 156.0.8078.73 (52 CVEs incl. CVE-2026-118306 FileSystem sandbox escape) - HKCERT Alert A26-10-59](https://intel.threadlinqs.com/threat/TL-2026-5464) — CRITICAL · 2026-11-07

## Sources

Enriched from CVE.org, NVD, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-10-28. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [chromereleases.googleblog.com](https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_0562499947.html)
- [issues.chromium.org](https://issues.chromium.org/issues/573378812)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-118359
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