high7.3
CVE-2026-87811
SiYuan before v3.8.2 inserts persisted notebook template paths into HTML input value attributes without proper attribute encoding.
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| SiYuan | before 3.8.2 |
Versions were read from the advisory text. No structured product data has been published for this record yet.