CVE-2026-65605

SiYuan before v3.7.2 contains a stored cross-site scripting vulnerability in Attribute View (database) cell rendering. A Template column value is rendered as HTML via text/template without auto-escaping, and EscapeHTML is only applied when HasUnclosedHtmlTag returns true; because balanced self-closing tags such as <img> are skipped by that check, a payload like <img src=x onerror=...> is stored unescaped and later inserted into the page via innerHTML, executing when the database is viewed. Because the desktop renderer runs with nodeIntegration enabled, the injected script can reach require and escalate to arbitrary command execution.

CVSS v3 9.6 CRITICAL

9.6^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.8 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/siyuan-note/siyuan/commit/41f2861c87575ff5ac4b50a0520b1a4fe55b4a70
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-pw5c-qhf3-jhwh
https://www.vulncheck.com/advisories/siyuan-before-stored-xss-to-rce-via-attribute-view
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-pw5c-qhf3-jhwh

Configurations

No configuration.

History

23 Jul 2026, 16:17

Type	Values Removed	Values Added
References	~~() https://github.com/siyuan-note/siyuan/security/advisories/GHSA-pw5c-qhf3-jhwh -~~	() https://github.com/siyuan-note/siyuan/security/advisories/GHSA-pw5c-qhf3-jhwh -

23 Jul 2026, 12:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-23 12:18

Updated : 2026-07-23 16:17

NVD link : CVE-2026-65605

Mitre link : CVE-2026-65605

CVE.ORG link : CVE-2026-65605

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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