---
id: CVE-2026-106243
title: >-
  Incomplete cleanup in Proxy Auth in Google Chrome prior to 155.0.8059.39
  allowed an adjacent attacker to obtain sensitive information via crafted
  network traffic
summary: >-
  Incomplete cleanup in Proxy Auth in Google Chrome prior to 155.0.8059.39
  allowed an adjacent attacker to obtain sensitive information via crafted
  network traffic. (Chromium security severity: High)
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-459
vendor: Google
product: Chrome
affected:
  - Chrome >= 155.0.8059.39 < 155.0.8059.39
published: '2026-10-06'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T21:17:08.267'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106243'
references:
  - url: >-
      https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_086471744.html
    label: chrome-cve-admin@google.com
  - url: 'https://issues.chromium.org/issues/533426590'
    label: chrome-cve-admin@google.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-06T20:40:08.442444Z'
ingestedAt: '2026-10-06T19:13:33.933Z'
---

## Overview

Incomplete cleanup in Proxy Auth in Google Chrome prior to 155.0.8059.39 allowed an adjacent attacker to obtain sensitive information via crafted network traffic. (Chromium security severity: High)

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.