{"schemaVersion":3,"id":"CVE-2026-25992","aliases":["GHSA-f72r-2h5j-7639","GO-2026-4386"],"status":"published","duplicateOf":null,"title":null,"description":"SiYuan is a personal knowledge management system. Prior to 3.5.5, the /api/file/getFile endpoint uses case-sensitive string equality checks to block access to sensitive files. On case-insensitive file systems such as Windows, attackers can bypass restrictions using mixed-case paths and read protected configuration files. This vulnerability is fixed in 3.5.5.","dates":{"published":"2026-02-10T17:47:36.041Z","modified":"2026-02-10T19:17:41.722Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Go","score":8.7,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Go","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00748,"percentile":0.54108,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.22299999999999992,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00525},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00525,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00525,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00525,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00525,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00525,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00525,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00525,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00525,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00525,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00525,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00669,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00669,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00669,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00669,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00669,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00748,"percentile":0.54108}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00525,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00525,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00525,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00525,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00669,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00669,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00669,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00669,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00669,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00684,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00748,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00748,"percentile":0.54108}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"GITHUB_SIYUAN-NOTE_SIYUAN","name":"Siyuan","source":"github","url":"https://github.com/siyuan-note/siyuan/issues/11949","maturity":"poc","reliabilityScore":0.3,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","description":"The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/22.html"}],"affected":[{"vendor":"b3log","product":"siyuan","name":"siyuan","label":"siyuan","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 3.5.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.5.5","eol":null,"hubHref":"/vendor/b3log/siyuan"},{"vendor":"github.com/siyuan-note/siyuan","product":"kernel","name":"github.com/siyuan-note/siyuan/kernel","label":"kernel","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","purlType":"golang","versions":[{"text":"≤ 0.0.0-20260126094835-d5d10dd41b0c","noFixRecorded":false,"fixedIn":null},{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"≤ 0.0.0-20260126094835-d5d10dd41b0c | All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"siyuan-note","product":"siyuan","name":"siyuan","label":"siyuan","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 3.5.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 3.5.5","eol":null,"hubHref":"/vendor/siyuan-note/siyuan"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f72r-2h5j-7639","label":"github.com/siyuan-note/siyuan/security/advisories/GHSA-f72r-2h5j-7639","hostname":"github.com","tags":["X Refsource CONFIRM","WEB","Advisory","Exploit","Vendor Advisory"]},{"url":"https://github.com/siyuan-note/siyuan/releases/tag/v3.5.5","label":"github.com/siyuan-note/siyuan/releases/tag/v3.5.5","hostname":"github.com","tags":["X Refsource MISC","WEB","Product","Release Notes"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25992","label":"nvd.nist.gov/vuln/detail/CVE-2026-25992","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/siyuan-note/siyuan/commit/1f02650b3892d2ea3896242dd2422c30bda55e11","label":"github.com/siyuan-note/siyuan/commit/1f02650b3892d2ea3896242dd2422c30bda55e11","hostname":"github.com","tags":["WEB"]},{"url":"https://github.com/siyuan-note/siyuan","label":"github.com/siyuan-note/siyuan","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-02-10T17:47:36.041Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-02-10T19:17:41.722Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":40,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T13:11:54.986Z","stale":false,"partial":false}}