What is CVE-2026-64810?

CVE-2026-64810 is a medium-severity vulnerability in Jetbrains Intellij Idea, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2026-07-23.

How severe is CVE-2026-64810?

Medium severity. CVSS v3 base score is 4.3 out of 10.

XSS in Jetbrains Intellij Idea

CVE-2026-64810

In JetBrains IntelliJ IDEA before 2026.2 hTML injection was possible in an IDE notification, allowing silent user activity tracking

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

Affected products

Jetbrains Intellij Idea — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@jetbrains.com

Frequently asked questions

What is CVE-2026-64810?: CVE-2026-64810 is a medium-severity vulnerability in Jetbrains Intellij Idea, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2026-07-23.
How severe is CVE-2026-64810?: Medium severity. CVSS v3 base score is 4.3 out of 10.