SiYuan is a personal knowledge management system. Versions prior to 3.5.4 have a stored Cross-Site Scripting (XSS) vulnerability that allows an attacker to inject arbitrary HTML attributes into the `icon` attribute of a block via the `/api/attr/setBlockAttrs` API. The payload is later rendered in the dynamic icon feature in an unsanitized context, leading to stored XSS and, in the desktop environment, potential remote code execution (RCE). This issue bypasses the previous fix for issue `#15970` (XSS → RCE via dynamic icons). Version 3.5.4 contains an updated fix.
Metrics
Affected Vendors & Products
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Advisories
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Fixes
Solution
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Workaround
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References
History
Mon, 19 Jan 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | SiYuan is a personal knowledge management system. Versions prior to 3.5.4 have a stored Cross-Site Scripting (XSS) vulnerability that allows an attacker to inject arbitrary HTML attributes into the `icon` attribute of a block via the `/api/attr/setBlockAttrs` API. The payload is later rendered in the dynamic icon feature in an unsanitized context, leading to stored XSS and, in the desktop environment, potential remote code execution (RCE). This issue bypasses the previous fix for issue `#15970` (XSS → RCE via dynamic icons). Version 3.5.4 contains an updated fix. | |
| Title | SiYuan vulnerable to Stored XSS / RCE via `setBlockAttrs` icon attribute | |
| Weaknesses | CWE-94 | |
| References |
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| Metrics |
cvssV4_0
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Projects
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-01-19T20:00:05.839Z
Reserved: 2026-01-16T15:46:40.843Z
Link: CVE-2026-23852
Vulnrichment
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NVD
Status : Received
Published: 2026-01-19T20:15:49.803
Modified: 2026-01-19T20:15:49.803
Link: CVE-2026-23852
Redhat
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OpenCVE Enrichment
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Weaknesses