CVE-2026-17861: Insufficient validation of untrusted input in Google Chrome
Insufficient validation of untrusted input in Updater in Google Chrome prior to 151.0.7922.72 allowed a local attacker to perform OS-level privilege escalation via a malicious file. (Chromium security severity: Medium)
AI Analysis
Technical Summary
The Updater in Google Chrome versions before 151.0.7922.72 does not sufficiently validate untrusted input, enabling a local attacker to perform OS-level privilege escalation through a crafted malicious file. This vulnerability is identified as CVE-2026-17861 and relates to improper input validation (CWE-20). There is no CVSS score available, and no explicit patch or remediation details have been provided in the available data.
Potential Impact
A successful exploitation of this vulnerability would allow a local attacker to gain elevated privileges on the operating system, potentially leading to unauthorized system control or access. However, there are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, avoid running untrusted files or code locally and monitor official Google Chrome security advisories for updates.
CVE-2026-17861: Insufficient validation of untrusted input in Google Chrome
Description
Insufficient validation of untrusted input in Updater in Google Chrome prior to 151.0.7922.72 allowed a local attacker to perform OS-level privilege escalation via a malicious file. (Chromium security severity: Medium)
CVSS v3.1
Score 7.8high
Affected software
pkg:github/chromium/chromiumRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Updater in Google Chrome versions before 151.0.7922.72 does not sufficiently validate untrusted input, enabling a local attacker to perform OS-level privilege escalation through a crafted malicious file. This vulnerability is identified as CVE-2026-17861 and relates to improper input validation (CWE-20). There is no CVSS score available, and no explicit patch or remediation details have been provided in the available data.
Potential Impact
A successful exploitation of this vulnerability would allow a local attacker to gain elevated privileges on the operating system, potentially leading to unauthorized system control or access. However, there are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, avoid running untrusted files or code locally and monitor official Google Chrome security advisories for updates.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-m293-xcr4-f6hc
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-17861"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a6ae5169c2644c7f8981465
Added to database: 07/30/2026, 05:45:58 UTC
Last enriched: 07/30/2026, 06:12:07 UTC
Last updated: 07/31/2026, 02:51:54 UTC
Views: 5
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