CVE-2026-17870: Insufficient validation of untrusted input in Google Chrome
CVE-2026-17870 is a medium severity vulnerability in Google Chrome involving insufficient validation of untrusted input in the Cast feature. This flaw affects Chrome versions prior to 151.0.7922.72 and allows an attacker on the local network segment to leak cross-origin data via malicious network traffic. The vulnerability was publicly disclosed in July 2026. No confirmed exploits in the wild have been reported. A vendor advisory is available but does not explicitly state the patch status or remediation details.
AI Analysis
Technical Summary
This vulnerability in Google Chrome's Cast component arises from insufficient validation of untrusted input, which can be exploited by an attacker on the same local network segment to leak cross-origin data through crafted network traffic. The issue affects Chrome versions before 151.0.7922.72. The vendor advisory linked corresponds to a stable channel update announcement but does not explicitly confirm if a fix has been released or provide remediation instructions.
Potential Impact
An attacker on the local network segment can leverage this vulnerability to leak cross-origin data, potentially exposing sensitive information from other origins within the browser context. The impact is limited to data leakage and requires local network access. There are no reports of active exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should monitor the referenced Google Chrome stable channel update blog for updates and apply any new Chrome updates promptly once a fix is confirmed.
CVE-2026-17870: Insufficient validation of untrusted input in Google Chrome
Description
CVE-2026-17870 is a medium severity vulnerability in Google Chrome involving insufficient validation of untrusted input in the Cast feature. This flaw affects Chrome versions prior to 151.0.7922.72 and allows an attacker on the local network segment to leak cross-origin data via malicious network traffic. The vulnerability was publicly disclosed in July 2026. No confirmed exploits in the wild have been reported. A vendor advisory is available but does not explicitly state the patch status or remediation details.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in Google Chrome's Cast component arises from insufficient validation of untrusted input, which can be exploited by an attacker on the same local network segment to leak cross-origin data through crafted network traffic. The issue affects Chrome versions before 151.0.7922.72. The vendor advisory linked corresponds to a stable channel update announcement but does not explicitly confirm if a fix has been released or provide remediation instructions.
Potential Impact
An attacker on the local network segment can leverage this vulnerability to leak cross-origin data, potentially exposing sensitive information from other origins within the browser context. The impact is limited to data leakage and requires local network access. There are no reports of active exploitation.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users should monitor the referenced Google Chrome stable channel update blog for updates and apply any new Chrome updates promptly once a fix is confirmed.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-07-27T23:35:08.541Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html","vendor":"Google"}]
Threat ID: 6a6aa09e9c2644c7f849b7ba
Added to database: 07/30/2026, 00:53:50 UTC
Last enriched: 07/30/2026, 03:10:11 UTC
Last updated: 07/30/2026, 03:10:11 UTC
Views: 2
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