CVE-2026-23850

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/19/2026

Last Modified1/30/2026

Sourcenvd

Honeypot Sightings0

Affected Products

b3log:siyuan

Weaknesses (CWE)

CWE-22

References

https://github.com/siyuan-note/siyuan/blob/master/kernel/model/file.go#L1035(security-advisories@github.com)

https://github.com/siyuan-note/siyuan/blob/v3.4.2/kernel/api/filetree.go#L799-L886(security-advisories@github.com)

https://github.com/siyuan-note/siyuan/commit/b2274baba2e11c8cf8901b0c5c871e5b27f1f6dd(security-advisories@github.com)

https://github.com/siyuan-note/siyuan/commit/f8f4b517077b92c90c0d7b51ac11be1b34b273ad(security-advisories@github.com)

https://github.com/siyuan-note/siyuan/issues/16860(security-advisories@github.com)

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-cv54-7wv7-qxcw(security-advisories@github.com)

IOC Correlations

No correlations recorded

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