CVE-2026-87442: Confused deputy in Google Chrome
Description
Confused deputy in Prerender in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to potentially bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)
CVSS v3.1
Score 3.1low
Affected software
Chrome
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-87442 is a confused deputy vulnerability in the Prerender feature of Google Chrome prior to version 153.0.8010.36. It enables a remote attacker, with control over the renderer process, to bypass the web origin policy through a specially crafted HTML page. This could allow unauthorized access to web resources normally restricted by origin policy. The vulnerability is classified as medium severity by Chromium security. The vendor has released a stable channel update that includes a fix for this issue.
Potential Impact
If exploited, this vulnerability could allow an attacker who has already compromised the renderer process to bypass the web origin policy, potentially leading to unauthorized access to web content or data that should be isolated by origin boundaries. This could undermine browser security assumptions related to web content isolation.
Mitigation Recommendations
A fix is available in Google Chrome version 153.0.8010.36. Users and administrators should update to this version or later to remediate the vulnerability. The vendor advisory at https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html provides official update information.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Chrome
- Date Reserved
- 2026-09-08T22:22:48.157Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html","vendor":"Google"}]
Threat ID: 6aa0b16cacd9273b49810f21
Added to database: 09/09/2026, 01:07:56 UTC
Last enriched: 09/09/2026, 04:23:04 UTC
Last updated: 10/23/2026, 15:10:15 UTC
Views: 31
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