VDB
CVE-2026-23850
CVE-2026-23850
PUBLISHED
CVSS 7.800000190734863 HIGH
SiYuan is a personal knowledge management system. In versions prior to 3.5.4, the markdown feature allows unrestricted server side html-rendering which allows arbitrary file read (LFD). Version 3.5.4 fixes the issue.
EPSS 0.62% · 49.4th percentile
Risk Scores
CVSS 4.0
7.800000190734863
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
EPSS Score
0.62%
49.4th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| siyuan-note | siyuan | < 3.5.4, < 3.5.4 |
| b3log | siyuan | 0, 0 |
| github.com | siyuan-note/siyuan/kernel | 0, 0 |
Timeline
- Jan 19, 2026 CVE Published
- Jan 19, 2026 PoC Published
- Jan 20, 2026 EPSS Score
- Jan 20, 2026 CVE Updated
- Jan 24, 2026 EPSS Score
- Jan 24, 2026 PoC Published
- Jan 24, 2026 PoC Published
- Jan 24, 2026 PoC Published
- Jan 24, 2026 PoC Published
- Jan 24, 2026 PoC Published
- Jan 27, 2026 EPSS Score
- Jan 30, 2026 Security Advisory
References
- https://github.com/siyuan-note/siyuan/blob/master/kernel/model/file.go#L1035 url
- https://github.com/siyuan-note/siyuan/commit/f8f4b517077b92c90c0d7b51ac11be1b34b273ad fix
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-cv54-7wv7-qxcw exploit
- https://github.com/siyuan-note/siyuan/issues/16860 discussion
- https://github.com/siyuan-note/siyuan/blob/v3.4.2/kernel/api/filetree.go#L799-L886 url
- https://github.com/siyuan-note/siyuan/commit/b2274baba2e11c8cf8901b0c5c871e5b27f1f6dd fix
- https://nvd.nist.gov/vuln/detail/CVE-2026-23850 advisory
- https://github.com/siyuan-note/siyuan package