{"cve":"CVE-2026-23850","nvd":{"published":"2026-01-19T20:15:49.533","modified":"2026-06-17T10:22:12.233","status":"Analyzed","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_v4":{"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","score":7.8},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-22"],"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"],"products":["b3log:siyuan"],"source":"nvd","synced_at":"2026-10-19T22:21:16.563232421+00:00"},"epss":{"cve":"CVE-2026-23850","score":0.0062,"percentile":0.49716,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-cv54-7wv7-qxcw","url":"https://osv.dev/vulnerability/GHSA-cv54-7wv7-qxcw","summary":"SiYuan vulnerable to Arbitrary file Read / SSRF","modified":"2026-02-03T22:40:58.962376Z","packages":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","ranges":["<0.0.0-20260118092326-b2274baba2e1"],"fixed":["0.0.0-20260118092326-b2274baba2e1"]}]},{"id":"GO-2026-4347","url":"https://osv.dev/vulnerability/GO-2026-4347","summary":"SiYuan vulnerable to Arbitrary file Read / SSRF in github.com/siyuan-note/siyuan/kernel","modified":"2026-03-03T04:57:53.732426Z","packages":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","ranges":["<0.0.0-20260118092326-b2274baba2e1"],"fixed":["0.0.0-20260118092326-b2274baba2e1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}