Observable discrepancy in Google Chromium - CVE-2026-87518
Published: September 9, 2026
Vulnerability identifier: #VU148623
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-87518
CWE-ID: CWE-203
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to obtain information about Safe Browsing behavior.
The vulnerability exists due to an observable discrepancy in Safe Browsing when handling Safe Browsing checks. A remote attacker can trigger the discrepancy to obtain information about Safe Browsing behavior.
User interaction is required.
Affected software
Google Chromium
Microsoft Edge
Google Chrome
Debian Linux
chromium (Debian package)
Microsoft Edge
Google Chrome
Debian Linux
chromium (Debian package)
How to mitigate CVE-2026-87518
Install security update from vendor's website.
Google Chromium - update to 153.0.8010.36
Microsoft Edge - update to 153.0.4234.32
Google Chrome - update to 153.0.8010.36
chromium (Debian package) - update to 153.0.8010.47-2~deb13u1
Microsoft Edge - update to 153.0.4234.32
Google Chrome - update to 153.0.8010.36
chromium (Debian package) - update to 153.0.8010.47-2~deb13u1