Cross-site scripting in IntelliJ IDEA - CVE-2026-64810
Published: August 17, 2026
Vulnerability identifier: #VU143851
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-64810
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to track user activity silently.
The vulnerability exists due to cross-site scripting in an IDE notification when rendering notification content. A remote attacker can inject crafted HTML content to track user activity silently.
Affected software
IntelliJ IDEA
How to mitigate CVE-2026-64810
Install security update from vendor's website.
IntelliJ IDEA - update to 2026.2