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.
Metrics
Affected Vendors & Products
References
History
Wed, 09 Sep 2026 13:30:00 +0000
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ssvc
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Wed, 09 Sep 2026 11:30:00 +0000
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| 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 |
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| Weaknesses | CWE-79 | |
| CPEs | cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:* | |
| Vendors & Products |
B3log
B3log siyuan |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-09-09T11:20:59.734Z
Updated: 2026-09-09T12:19:28.698Z
Reserved: 2026-09-09T10:30:15.669Z
Link: CVE-2026-87811
Updated: 2026-09-09T12:19:03.547Z
Status : Deferred
Published: 2026-09-09T12:17:15.950
Modified: 2026-09-09T20:20:21.673
Link: CVE-2026-87811
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