Dashboard / CVE-2026-124493

CVE-2026-124493

CRITICAL
INFO Priority: 0.03 BB Relevance: 69/100
Published: 2026-11-08 Modified: 2026-11-12 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Passive
S: X
AT: None
VC: High
VI: High
VA: None

Description

SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability in the DocumentType constructor that injects header textContent into innerHTML without HTML escaping. Attackers can store entity-encoded HTML in h1-h6 headers that executes JavaScript when editors using document:header mode initialize, enabling session cookie theft.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
JiHong88 suneditor 0 < 3.4.0
JiHong88 suneditor 0 < 3.4.0

References & Advisories (2)

Bug Bounty Relevance

69 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

9.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.34%
Raw Score 0.003440
Percentile 28.4%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00344
2026-11-12
0.00344
2026-11-10
0.00344
2026-11-09
0.00344

Intelligence Sources

mitre ref →
nvd ref →

External Links