CVE-2026-87453: Medium severity Google Chrome vulnerability
Chromium CVE-2026-87453: Confused deputy in BackgroundFetch
Other sources
Confused deputy in BackgroundFetch in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to leak sensitive information via a crafted HTML page. (Chromium security severity: Medium)
— NVD
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 153.0.4234.32 - Upgrade
Upgrade
Google Chrome / Chromiumto a version that resolves this vulnerability.Fixed in 153.0.8010.36
Event History
Frequently Asked Questions
What access does an attacker need to exploit this issue?
The attacker must already have compromised the Chrome renderer process. The described information leak is then triggered through a crafted HTML page.
Which Chrome versions are affected?
Google Chrome versions prior to 153.0.8010.36 are affected. Updating to 153.0.8010.36 or later addresses the affected version range described.
Are users exposed merely by visiting a malicious page?
The available information does not describe exploitation from a malicious page alone. It specifically requires a compromised renderer process, with a crafted HTML page used to leak sensitive information.