Improper Encoding or Escaping of Output in Google Chromium - CVE-2026-87550
Published: September 9, 2026
Vulnerability identifier: #VU148627
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-87550
CWE-ID: CWE-116
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to inject CSS.
The vulnerability exists due to improper encoding or escaping of output in CSS when rendering crafted CSS content. A remote attacker can provide crafted CSS content to inject CSS.
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-2026-87550
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