CVE-2026-62204
SiYuan before v3.7.4 Plugin Overwrite via Bazaar Install
- State
- Published
- Severity
- 5.9 Medium
- Published
- Aug 22, 2026
- Updated
- Aug 26, 2026
- Reserved
- Jul 13, 2026
Description
SiYuan versions before v3.7.4 fail to validate that packageName matches the downloaded package content in bazaar install endpoints. Attackers with same-origin access can overwrite existing trusted plugins by supplying mismatched packageName and repoURL parameters, achieving persistence across application restarts.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.9 Medium | CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L | VulnCheck |
| 3.1 | 6.6 Medium | CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:L | VulnCheck |
Weaknesses
- CWE-345 Insufficient Verification of Data Authenticity
Affected Products
| Product | Versions |
|---|---|
siyuansiyuan-note |
|
References
- GitHub Security Advisory (GHSA-rpx2-p6hp-x5gj)vendor-advisory
- VulnCheck Advisory: SiYuan before v3.7.4 Plugin Overwrite via Bazaar Installthird-party-advisory
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