In JetBrains IntelliJ IDEA before 2026.3,
2026.2.4 stored XSS was possible on the built-in web server via Markdown preview

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History

Fri, 06 Nov 2026 13:15:00 +0000

Type Values Removed Values Added
First Time appeared Jetbrains
Jetbrains intellij Idea
Vendors & Products Jetbrains
Jetbrains intellij Idea

Fri, 06 Nov 2026 12:15:00 +0000

Type Values Removed Values Added
Title Stored XSS via Markdown Preview in IntelliJ IDEA Built‑In Web Server

Fri, 06 Nov 2026 10:30:00 +0000

Type Values Removed Values Added
Description In JetBrains IntelliJ IDEA before 2026.3, 2026.2.4 stored XSS was possible on the built-in web server via Markdown preview
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: JetBrains

Published:

Updated: 2026-11-06T14:40:18.394Z

Reserved: 2026-11-05T18:38:23.515Z

Link: CVE-2026-123309

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-06T11:17:10.053

Modified: 2026-11-06T21:29:48.800

Link: CVE-2026-123309

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-06T13:00:05Z

Weaknesses