CVE-2026-123301

HIGH
MEDIUM Priority: 0.02 BB Relevance: 66/100
Published: 2026-11-06 Modified: 2026-11-10 First seen: 2026-11-06 Status: active

Attack Surface

Network Low Complexity No Auth Conf. Impact Scope Change

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Required
S: Changed
C: High
I: Low
A: None

Description

In JetBrains IntelliJ IDEA before 2026.3 dOM-based XSS in the OpenAPI preview error view was possible

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
JetBrains IntelliJ IDEA 0 < 2026.3
JetBrains IntelliJ IDEA 0 < 2026.3
jetbrains intellij_idea < 2026.3

Bug Bounty Relevance

66 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

8.2 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

EPSS — Exploitation Probability

0.27%
Raw Score 0.002660
Percentile 18.7%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00266
2026-11-12
0.00266
2026-11-10
0.00266
2026-11-09
0.00266
2026-11-08
0.00266
2026-11-07
0.00266

Intelligence Sources

mitre ref →
nvd ref →