Input validation error in Google Chromium - CVE-2026-15123

Vulnerability identifier: #VU137203

CSH Severity: High

CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-15123

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation when processing HTML content in DOM. Chrome High. A remote attacker can trick the victim to open a specially crafted web page and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Google Chromium
Microsoft Edge
Google Chrome
Prisma Access Browser
Debian Linux
Fedora
Chrome OS
chromium
chromium (Debian package)

Install update from vendor's website.

Google Chromium - update to 150.0.7871.114
Microsoft Edge - update to 150.0.4078.65
Google Chrome - update to 150.0.7871.114
Chrome OS - update to 144.0.7559.259
chromium - addressed in versions 150.0.7871.114-1.el9, 150.0.7871.114-1.el10_2, 150.0.7871.114-1.el10_3, 150.0.7871.114-1.fc43, 150.0.7871.114-1.fc44
chromium (Debian package) - update to 150.0.7871.114-1~deb13u1
Prisma Access Browser - update to 150.49.8.187

• https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_01162222768.html
• https://crbug.com/523729553

• Multiple vulnerabilities in Google Chrome
• Fedora EPEL 10.3 update for chromium
• Fedora 43 update for chromium
• Fedora EPEL 9 update for chromium
• Fedora 44 update for chromium
• Fedora EPEL 10.2 update for chromium
• Debian update for chromium
• Multiple vulnerabilities in Microsoft Edge
• Multiple vulnerabilities in Google ChromeOS LTS
• Multiple vulnerabilities in Prisma Access Browser (August 2026)