Dashboard / CVE-2026-56397

CVE-2026-56397

CRITICAL
INFO Priority: 0.05 BB Relevance: 69/100
Published: 2026-06-21 Modified: 2026-11-08 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: Active
AT: None
VC: High
VI: High
VA: High

Description

SiYuan before v3.6.1 fails to sanitize package metadata and README content in the Bazaar marketplace, allowing malicious package authors to inject arbitrary HTML and JavaScript. Attackers can achieve remote code execution on any user browsing the Bazaar by embedding XSS payloads in package displayName, description, or README fields, exploiting Electron's nodeIntegration setting to execute OS commands.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
SiYuan SiYuan 0 < 3.6.1

References & Advisories (2)

Bug Bounty Relevance

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

CVSS Score

9.4 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

EPSS — Exploitation Probability

0.50%
Raw Score 0.004960
Percentile 43.1%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00496
2026-11-12
0.00496
2026-11-10
0.00496
2026-11-09
0.00496
2026-11-08
0.00496

Intelligence Sources

mitre ref →

External Links