Vulnerability · Published Jan 19, 2026 · Assigned by GitHub_M
CVE-2026-23850SiYuan vulnerable to arbitrary file read
High 7.8
In plain English
A high-severity path traversal in siyuan from siyuan-note. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)7.8High
Exploit odds (30 days)0.6%top 50.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/siyuan-note/siyuan/kernel | 0.0.0-20260118092326-b2274baba2e1 | GHSA-cv54-7wv7-qxcw |
| Go | github.com/siyuan-note/siyuan/kernel | 0.0.0-20260118092326-b2274baba2e1 | GO-2026-4347 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| siyuan-note | siyuan | < 3.5.4 |
Weakness: CWE-22 · Vector: 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
References
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-cv54-7wv7-qxcw x_refsource_CONFIRM
- https://github.com/siyuan-note/siyuan/issues/16860 x_refsource_MISC
- https://github.com/siyuan-note/siyuan/commit/b2274baba2e11c8cf8901b0c5c871e5b27f1f6dd x_refsource_MISC
- https://github.com/siyuan-note/siyuan/commit/f8f4b517077b92c90c0d7b51ac11be1b34b273ad x_refsource_MISC
- https://github.com/siyuan-note/siyuan/blob/master/kernel/model/file.go#L1035 x_refsource_MISC
- https://github.com/siyuan-note/siyuan/blob/v3.4.2/kernel/api/filetree.go#L799-L886 x_refsource_MISC