---
id: CVE-2026-121039
title: >-
  Incorrect authorization in Proxy Auth in Google Chrome prior to 157.0.8103.38
  allowed an adjacent attacker to obtain sensitive information via crafted
  network traffic
summary: >-
  Incorrect authorization in Proxy Auth in Google Chrome prior to 157.0.8103.38
  allowed an adjacent attacker to obtain sensitive information via crafted
  network traffic. (Chromium security severity: Medium)
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'
cvssSource: adp
cwe:
  - CWE-863
vendor: Google
product: Chrome
affected:
  - Chrome >= 157.0.8103.38 < 157.0.8103.38
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-04T18:54:06.332966Z'
published: '2026-11-03'
updated: '2026-11-04'
sourceUpdated: '2026-11-04T18:54:09.343Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-121039'
references:
  - url: >-
      https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html
  - url: 'https://issues.chromium.org/issues/533454968'
tags:
  - cve.org
epss: 0.00114
epssPercentile: 0.01516
ingestedAt: '2026-11-05T21:36:00.508Z'
---

## Overview

Incorrect authorization in Proxy Auth in Google Chrome prior to 157.0.8103.38 allowed an adjacent attacker to obtain sensitive information via crafted network traffic. (Chromium security severity: Medium)

## Affected

- `Chrome >= 157.0.8103.38 < 157.0.8103.38`

## Remediation

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