CVE-2026-65605
SiYuan before v3.7.2 Stored XSS to RCE via Attribute View
Description
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.
INFO
Published Date :
July 23, 2026, 12:18 p.m.
Last Modified :
Oct. 24, 2026, 1:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | CRITICAL | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
Solution
- Update SiYuan to version 3.7.2 or later.
- Review and sanitize all user-provided template data.
- Avoid rendering HTML from untrusted sources.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-65605.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-65605 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-65605
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-65605 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-65605 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Translated by [email protected]
Oct. 24, 2026
Action Type Old Value New Value Added Translation Title: siyuan de siyuan-note, Description: SiYuan anterior a la v3.7.2 contiene una vulnerabilidad de cross-site scripting almacenado en la renderización de celdas de la Vista de Atributos (base de datos). Un valor de columna de Plantilla se renderiza como HTML a través de text/template sin auto-escapado, y EscapeHTML solo se aplica cuando HasUnclosedHtmlTag devuelve verdadero; porque las etiquetas autocerradas balanceadas como [img] son omitidas por esa verificación, una carga útil como <img src=x onerror_disabled=...> se almacena sin escapar y luego se inserta en la página a través de innerHTML, ejecutándose cuando se visualiza la base de datos. Debido a que el renderizador de escritorio se ejecuta con nodeIntegration habilitado, el script inyectado puede alcanzar require y escalar a la ejecución arbitraria de comandos. -
CVE Modified by [email protected]
Sep. 17, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/65xxx/CVE-2026-65605.json">CVE-2026-65605</a> Added Reference https://github.com/siyuan-note/siyuan/commit/41f2861c87575ff5ac4b50a0520b1a4fe55b4a70 Added Reference https://github.com/siyuan-note/siyuan/security/advisories/GHSA-pw5c-qhf3-jhwh Added Reference https://www.vulncheck.com/advisories/siyuan-before-stored-xss-to-rce-via-attribute-view Removed Reference https://github.com/siyuan-note/siyuan/commit/41f2861c87575ff5ac4b50a0520b1a4fe55b4a70 Removed Reference https://github.com/siyuan-note/siyuan/security/advisories/GHSA-pw5c-qhf3-jhwh Removed Reference https://www.vulncheck.com/advisories/siyuan-before-stored-xss-to-rce-via-attribute-view -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Sep. 17, 2026
Action Type Old Value New Value Added Reference https://github.com/siyuan-note/siyuan/security/advisories/GHSA-pw5c-qhf3-jhwh Removed Reference https://github.com/siyuan-note/siyuan/security/advisories/GHSA-pw5c-qhf3-jhwh -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 23, 2026
Action Type Old Value New Value Added Reference https://github.com/siyuan-note/siyuan/security/advisories/GHSA-pw5c-qhf3-jhwh Added SSVC {'id': 'CVE-2026-65605', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-23T15:23:13.200750Z'} -
New CVE Received by [email protected]
Jul. 23, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'siyuan-note', 'product': 'siyuan', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '3.7.2', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '3.7.2', 'versionType': 'semver'}], 'packageURL': 'pkg:npm/github.com/siyuan-note/siyuan', 'defaultStatus': 'unaffected'}] Added Description 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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 Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H Added CWE CWE-79 Added Reference https://github.com/siyuan-note/siyuan/commit/41f2861c87575ff5ac4b50a0520b1a4fe55b4a70 Added Reference https://github.com/siyuan-note/siyuan/security/advisories/GHSA-pw5c-qhf3-jhwh Added Reference https://www.vulncheck.com/advisories/siyuan-before-stored-xss-to-rce-via-attribute-view