Vulnerability 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.
CVSS Score
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| B3Log | Siyuan | < 3.5.4 |
Related Weaknesses (CWE)
References
- https://github.com/siyuan-note/siyuan/blob/master/kernel/model/file.go#L1035Product
- https://github.com/siyuan-note/siyuan/blob/v3.4.2/kernel/api/filetree.go#L799-L8Product
- https://github.com/siyuan-note/siyuan/commit/b2274baba2e11c8cf8901b0c5c871e5b27fPatch
- https://github.com/siyuan-note/siyuan/commit/f8f4b517077b92c90c0d7b51ac11be1b34bPatch
- https://github.com/siyuan-note/siyuan/issues/16860Issue TrackingPatch
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-cv54-7wv7-qxcwExploitPatchVendor Advisory
FAQ
What is CVE-2026-23850?
CVE-2026-23850 is a vulnerability with a CVSS score of 7.5 (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 ...
How severe is CVE-2026-23850?
CVE-2026-23850 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23850?
Check the references section above for vendor advisories and patch information. Affected products include: B3Log Siyuan.