cve.bz

CVE-2026-23645

5.3 mediumEPSS 0.3%

Medium (5.3) in b3log siyuan. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/siyuan-note/siyuan/kernel 0.0.0-20260116101155-11115da3d0de.

SiYuan is self-hosted, open source personal knowledge management software. Prior to 3.5.4-dev2, a Stored Cross-Site Scripting (XSS) vulnerability exists in SiYuan Note. The application does not sanitize uploaded SVG files. If a user uploads and views a malicious SVG file (e.g., imported from an untrusted source), arbitrary JavaScript code is executed in the context of their authenticated session. This vulnerability is fixed in 3.5.4-dev2.

Severity

CVSS 4.0

5.3 medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

CVSS 3.1

6.1 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
0.3% chance of exploitation in the next 30 days; higher than 20% of CVEs (scores of 2026-11-01)
CWE
CWE-79
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-pcjq-j3mq-jv5jGogithub.com/siyuan-note/siyuan/kernel<0.0.0-20260116101155-11115da3d0de0.0.0-20260116101155-11115da3d0de
GO-2026-4324Gogithub.com/siyuan-note/siyuan/kernel<0.0.0-20260116101155-11115da3d0de0.0.0-20260116101155-11115da3d0de

References

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