CVE-2026-23850highCWE-22

SiYuan vulnerable to arbitrary file read

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.8epss 0.5%

exploitation probability

0.5%top 59% of all CVEs

observed exploitation

nono source reports it

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: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

Affected products

siyuan-note · siyuan

References

https://github.com/siyuan-note/siyuan/blob/master/kernel/model/file.go#L1035 https://github.com/siyuan-note/siyuan/blob/v3.4.2/kernel/api/filetree.go#L799-L886 https://github.com/siyuan-note/siyuan/commit/b2274baba2e11c8cf8901b0c5c871e5b27f1f6dd https://github.com/siyuan-note/siyuan/commit/f8f4b517077b92c90c0d7b51ac11be1b34b273ad https://github.com/siyuan-note/siyuan/issues/16860 https://github.com/siyuan-note/siyuan/security/advisories/GHSA-cv54-7wv7-qxcw