{"id":"CVE-2026-25992","aliases":["GHSA-f72r-2h5j-7639","GO-2026-4386"],"url":"https://o3.security/vulnerability/CVE-2026-25992","summary":"SiYuan has a File Read Interface Case Bypass Vulnerability","details":"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.","published":"2026-02-10T17:47:36.041Z","modified":"2026-08-12T03:51:09.800025299Z","cvss":{"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"},"epss":{"score":0.00525,"percentile":0.43235,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","fixedVersion":null}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/siyuan-note/siyuan/releases/tag/v3.5.5"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25992.json"},{"type":"ADVISORY","url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f72r-2h5j-7639"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25992"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:09.800025299Z"}}