Insufficient validation of untrusted input in Cast in Google Chrome prior to 151.0.7922.72 allowed an attacker on the local network segment to leak… (CVE-2026-17870)
Insufficient validation of untrusted input in Cast in Google Chrome prior to 151.0.7922.72 allowed an attacker on the local network segment to leak cross-origin data via malicious network traffic. (Chromium security severity: Medium)
AI Analysis
Technical Summary
The vulnerability CVE-2026-17870 involves insufficient validation of untrusted input in the Cast feature of Google Chrome versions before 151.0.7922.72. This flaw enables an attacker positioned on the local network segment to leak cross-origin data through malicious network traffic. The issue relates to improper input validation (CWE-20). There is no CVSS score provided, and no official patch or remediation details have been disclosed at this time.
Potential Impact
An attacker on the local network segment can exploit this vulnerability to leak cross-origin data, potentially exposing sensitive information across different origins. The impact is limited to data leakage and requires local network access. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should limit exposure to untrusted local network environments and monitor vendor communications for updates.
Insufficient validation of untrusted input in Cast in Google Chrome prior to 151.0.7922.72 allowed an attacker on the local network segment to leak… (CVE-2026-17870)
Description
Insufficient validation of untrusted input in Cast in Google Chrome prior to 151.0.7922.72 allowed an attacker on the local network segment to leak cross-origin data via malicious network traffic. (Chromium security severity: Medium)
CVSS v3.1
Score 4.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-17870 involves insufficient validation of untrusted input in the Cast feature of Google Chrome versions before 151.0.7922.72. This flaw enables an attacker positioned on the local network segment to leak cross-origin data through malicious network traffic. The issue relates to improper input validation (CWE-20). There is no CVSS score provided, and no official patch or remediation details have been disclosed at this time.
Potential Impact
An attacker on the local network segment can exploit this vulnerability to leak cross-origin data, potentially exposing sensitive information across different origins. The impact is limited to data leakage and requires local network access. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should limit exposure to untrusted local network environments and monitor vendor communications for updates.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-9j3q-3r6g-76c2
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-17870"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a6ae5169c2644c7f89815b0
Added to database: 07/30/2026, 05:45:58 UTC
Last enriched: 07/30/2026, 06:13:15 UTC
Last updated: 07/31/2026, 02:51:53 UTC
Views: 7
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