> CVE-2026-59855 [HIGH]

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PUBLISHED
2026-07-09 23:17
MODIFIED
2026-07-09 23:17
CVSS_SCORE V3
8.6
EPSS (Prob. Exploit)
0.53%
Top 56.0%
DATA SOURCES:
NVD 🔗 2026-07-10 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 OSV 🔗 2026-07-16

> DESCRIPTION

SiYuan is an open-source personal knowledge management system. Prior to 3.7.1, Asset.render in app/src/asset/index.ts interpolates the unsanitized this.path value into HTML assigned to innerHTML, allowing a crafted asset link containing a double quote to break out of the src attribute, inject an event handler, and execute JavaScript that can run OS commands in the Electron renderer. This issue is fixed in versions 3.7.1-alpha.2 and 3.7.1.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/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

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/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
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
Required (R)
Nécessite une action utilisateur (clic lien, ouverture fichier, etc.)
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-80

> CWE DETAILED DESCRIPTIONS

CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page - The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

SiYuan: Store XSS To Rce via Asset.render

AFFECTED PACKAGES:
Unknown / Unknown
688 versions affected
ALIASES:
GHSA-w3gq-5j72-36vc

> HISTORIQUE DES MODIFICATIONS

Première apparition
09/07/2026 23:17
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) - The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes spe...
Nouvelle valeur:
CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page - The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special charact...
📊 ENRICHISSEMENT 01/08/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) - The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes spe...
Total des modifications: 2 Dernière mise à jour: 5 days ago

> REFERENCES

https://github.com/siyuan-note/siyuan/commit/efbe3a557720034782643e55c9e0282530c...
https://github.com/siyuan-note/siyuan/releases/tag/v3.7.1
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-w3gq-5j72-36vc
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