{"id":"GHSA-6xvp-3rfv-g2g2","kind":"vulnerability","aliases":["GHSA-6xvp-3rfv-g2g2"],"related":[],"title":"Duplicate Advisory: SiYuan: The publish filter for database backlinks consults the forbidden list instead of the visibility list, disclosing hidden-tier documents to anonymous readers","description":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-p4qw-vx5p-g984. This link is maintained to preserve external references.\n\n## Original Description\nSiYuan versions before v3.7.4 contain an information disclosure vulnerability in the getAttributeViewBacklinks endpoint that consults the forbidden access list instead of the visibility list when filtering backlinks. Anonymous readers can supply a publicly visible database row identifier to discover hidden-tier documents that reference it, receiving the database name, row title, and document path of hidden documents.","summary":"SiYuan's database backlink endpoint filters results against the forbidden access list instead of the visibility list, so hidden documents that reference a publicly visible database row are returned. An anonymous reader gets the database name, row title and document path of those hidden documents.","severity":"medium","cvss":5.800000190734863,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"github.com/siyuan-note/siyuan/kernel","fixed":[],"affected":"< 3.7.4","ecosystem":"go"}],"ecosystems":["go"],"tags":["cwe-863","package","publishing","self-hosted","siyuan"],"not_affected_if":["version-3.7.4-or-later"],"how_to_check":"Check the SiYuan version; versions below v3.7.4 are affected.","fix":"Upgrade SiYuan to v3.7.4 or later.","status":"withdrawn","published_at":"2026-08-14T12:31:28+00:00","first_seen_at":"2026-10-23T19:11:31+00:00","triaged_at":"2026-10-23T21:48:46+00:00","updated_at":"2026-10-23T21:48:46+00:00","category":"package","confidence":0.8,"triage":{"at":"2026-10-23T21:48:46Z","model":"claude-haiku-5-5","output":{"fix":"Upgrade SiYuan to v3.7.4 or later.","reach":"internet","impact":"medium","summary":"SiYuan's database backlink endpoint filters results against the forbidden access list instead of the visibility list, so hidden documents that reference a publicly visible database row are returned. An anonymous reader gets the database name, row title and document path of those hidden documents.","category":"package","who_cares":["siyuan","self-hosted","publishing"],"confidence":0.8,"needs_auth":"no","worst_case":"Anonymous readers learn hidden document titles, row names and paths.","analyst_note":"","how_to_check":"Check the SiYuan version; versions below v3.7.4 are affected.","needs_analyst":false,"not_affected_if":["version-3.7.4-or-later"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.00082,"input_tokens":2985,"output_tokens":1042,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-863':41B '/siyuan-note/siyuan/kernel':39A '3rfv':30A,35A '6xvp':29A,34A 'access':58B,138C 'advisori':2A,94C,96C 'anonym':25A,78B,148C 'backlink':9A,51B,147C 'consult':10A,135C 'contain':125C 'cwe':40B 'databas':8A,50B,73B,82B,155C,169C 'descript':120C 'disclos':19A 'disclosur':128C 'discov':159C 'document':23A,67B,87B,92B,163C,174C,178C 'duplic':1A,93C,104C 'endpoint':52B,133C 'extern':117C 'filter':6A,53B,146C 'forbidden':12A,57B,137C 'g2g2':31A,36A 'g984':110C 'get':80B 'getattributeviewbacklink':132C 'ghsa':28A,33A,107C 'ghsa-6xvp-3rfv-g2g2':27A,32A 'ghsa-p4qw-vx5p-g984':106C 'github.com':38A 'github.com/siyuan-note/siyuan/kernel':37A 'hidden':21A,66B,91B,161C,177C 'hidden-ti':20A,160C 'host':46B 'identifi':157C 'inform':127C 'instead':14A,60B,140C 'link':112C 'list':13A,18A,59B,64B,139C,144C 'maintain':114C 'name':83B,170C 'origin':119C 'p4qw':108C 'packag':42B 'path':88B,175C 'preserv':116C 'public':71B,153C 'publish':5A,43B 'reader':26A,79B,149C 'receiv':167C 'refer':69B,118C,165C 'result':54B 'return':76B 'row':74B,84B,156C,171C 'self':45B 'self-host':44B 'siyuan':3A,47B,48B,121C 'suppli':151C 'tier':22A,162C 'titl':85B,172C 'v3.7.4':124C 'version':122C 'visibl':17A,63B,72B,143C,154C 'vulner':129C 'vx5p':109C 'withdrawn':99C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2026-08-14T12:31:28+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","cvss_by":"GitHub","poc_count":0,"sources":[{"source":"ghsa","external_id":"GHSA-6xvp-3rfv-g2g2","url":"https://github.com/advisories/GHSA-6xvp-3rfv-g2g2","severity":"medium","published_at":"2026-08-14T12:31:28+00:00","modified_at":"2026-10-23T18:30:27+00:00","first_seen_at":"2026-10-23T19:11:31+00:00","fetched_at":"2026-10-23T19:11:31+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}