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)

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Google Chrome affected
Version Status Constraints
155.0.8059.39 affected < 155.0.8059.39

No data.

No data.

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_086471744.html cve-icon cve-icon
https://issues.chromium.org/issues/533426590 cve-icon cve-icon
History

Wed, 07 Oct 2026 03:15:00 +0000

Type Values Removed Values Added
Title Proxy Authentication Cleanup Failure Allows Adjacent Attacker to Leak Sensitive Data

Tue, 06 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 06 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
Description 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)
Weaknesses CWE-459
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-10-06T20:40:10.967Z

Reserved: 2026-10-06T16:33:13.409Z

Link: CVE-2026-106243

cve-icon Vulnrichment

Updated: 2026-10-06T20:40:05.985Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-06T19:17:51.253

Modified: 2026-10-06T21:17:08.267

Link: CVE-2026-106243

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-07T03:00:12Z

Weaknesses