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CVE-2026-17861: Insufficient validation of untrusted input in Google Chrome

0
High
VulnerabilityCVE-2026-17861cvecve-2026-17861
Published: 07/30/2026 (07/30/2026, 00:19:41 UTC)
Source: CVE Database V5
Vendor/Project: Google
Product: Chrome

Description

CVE-2026-17861 is a vulnerability in Google Chrome's Updater component prior to version 151.0.7922.72. It involves insufficient validation of untrusted input, which allows a local attacker to escalate privileges at the operating system level by leveraging a malicious file. The vulnerability has a high severity rating with a CVSS score of 7.8. No known exploits are reported in the wild. The vendor has published an advisory but has not explicitly stated the remediation level or patch availability in the provided data.

CVSS v3.1

Score 7.8high

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected software

Google

Chrome

Affected versions
>=151.0.7922.72 <151.0.7922.72
GitHub Actionsmore threats →ai
chromium/chromium
pkg:github/chromium/chromium
Affected versions
<151.0.7922.72

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/06/2026, 17:02:18 UTC

Technical Analysis

This vulnerability in Google Chrome's Updater component arises from insufficient validation of untrusted input. A local attacker can exploit this flaw by supplying a malicious file to perform OS-level privilege escalation. The issue affects Chrome versions prior to 151.0.7922.72. The CVSS v3.1 score is 7.8, indicating high severity, with attack vector local, low attack complexity, no privileges required, user interaction required, unchanged scope, and high impact on confidentiality, integrity, and availability. The vendor advisory URL is provided but does not explicitly confirm patch status in the input data.

Potential Impact

Successful exploitation allows a local attacker to escalate privileges on the operating system, potentially gaining higher-level access than intended. This can compromise system confidentiality, integrity, and availability. No active exploitation in the wild is currently known.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html for current remediation guidance. Until confirmation, users should apply updates promptly once available and avoid executing untrusted files locally.

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Technical Details

Data Version
5.2
Assigner Short Name
Chrome
Date Reserved
2026-07-27T23:35:06.509Z
State
PUBLISHED
Vendor Advisory Urls
[{"url":"https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html","vendor":"Google"}]

Threat ID: 6a6aa09c9c2644c7f849b744

Added to database: 07/30/2026, 00:53:48 UTC

Last enriched: 08/06/2026, 17:02:18 UTC

Last updated: 09/11/2026, 22:08:27 UTC

Views: 48

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