{"id":"CVE-2026-105205","title":"SiYuan before 3.8.5 contains an information disclosure vulnerability that allows publish-mode readers to learn backlink block IDs and reference counts from password-protected and publish-disabled documents by querying a published documen…","summary":"SiYuan before 3.8.5 contains an information disclosure vulnerability that allows publish-mode readers to learn backlink block IDs and reference counts from password-protected and publish-disabled documents by querying a published documen…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-200"],"vendor":"siyuan-note","product":"siyuan","affected":["siyuan < 3.8.5"],"published":"2026-10-04","updated":"2026-10-04","sourceUpdated":"2026-10-04T15:16:31.473","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-105205","references":[{"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-v758-8w88-pfr2","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/siyuan-before-3.8.5-information-disclosure-via-api-block-getdocinfo-and-getdocsinfo","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-04T15:00:34.389Z","slug":"CVE-2026-105205","body":"## Overview\n\nSiYuan before 3.8.5 contains an information disclosure vulnerability that allows publish-mode readers to learn backlink block IDs and reference counts from password-protected and publish-disabled documents by querying a published document. Attackers can send POST requests to /api/block/getDocInfo or getDocsInfo for a published document ID to obtain refIDs and refCount of hidden referencing blocks, bypassing the publish confidentiality boundary.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}