SiYuan before v3.8.2 inserts persisted notebook template paths into HTML input value attributes without proper attribute encoding. Attackers can craft malicious template paths that break out of the attribute context and execute JavaScript when a victim opens notebook configuration, enabling same-origin API requests and application state manipulation.
Advisories
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Fixes
Solution
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Workaround
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References
History
Wed, 09 Sep 2026 11:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | SiYuan before v3.8.2 inserts persisted notebook template paths into HTML input value attributes without proper attribute encoding. Attackers can craft malicious template paths that break out of the attribute context and execute JavaScript when a victim opens notebook configuration, enabling same-origin API requests and application state manipulation. | |
| Title | SiYuan before v3.8.2 Stored XSS via notebook template paths | |
| First Time appeared |
B3log
B3log siyuan |
|
| Weaknesses | CWE-79 | |
| CPEs | cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:* | |
| Vendors & Products |
B3log
B3log siyuan |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-09-09T12:19:28.698Z
Reserved: 2026-09-09T10:30:15.669Z
Link: CVE-2026-87811
No data.
Status : Received
Published: 2026-09-09T12:17:15.950
Modified: 2026-09-09T12:17:15.950
Link: CVE-2026-87811
No data.
OpenCVE Enrichment
No data.
Weaknesses