SiYuan: The reference filter for getRefIDs checks visibility but not the password tier, disclosing that password-protected documents reference a given block

{
  "id": "e482685c3189d0fc30af1baf568248a4e6960d55ba5c1a7df0cbab05a672bd85",
  "url": "https://osv.dev/vulnerability/GHSA-vg99-7gj7-2fr5",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "SiYuan: The reference filter for getRefIDs checks visibility but not the password tier, disclosing that password-protected documents reference a given block",
    "summary": "### Summary `/api/block/getRefIDs` filters its results for reader roles through a helper that checks only the visibility tiers. The password tier is not checked, because the helper does not receive the request context and therefore cannot evaluate the publish auth cookie. A reader who has not entered a document's publish password learns that the document references a given block. A function ten lines away in the same file does perform the full check, on the same input type. ### Details **Route,** identical at `eef105683` (`kernel/api/router.go:235`) and dev `a7ae96ce` (`:245`): ```go ginServer.Handle(\"POST\", \"/api/block/getRefIDs\", model.CheckAuth, getRefIDs) ``` No `CheckReadonly`, no `CheckAdminRole`. **The filter chain.** `getRefIDs` (`kernel/api/block.go:631`) checks `isEncryptedNotebookDeniedForPublish`, calls `model.GetBlockRefsInBox`, then for read-only roles: ```go publishIgnore := model.GetInvisiblePublishAccess(publishAccess) refDefs, originalRefBlockIDs = model.FilterRefDefsByPublishIgnore(publishIgnore, refDefs) ``` `FilterRefDefsByPublishIgnore` (`kernel/model/publish_access.go:1324`) collects the reference and definition identifiers, resolves their block trees, and delegates the decision to `FilterBlockTreesByPublishIgnore` (`:1314`), whose entire body is: ```go for id, bt := range bts { if CheckPathAccessableByPublishIgnore(bt.BoxID, bt.Path, publishIgnore) { ret[id] = bt } } ``` Inside that helper, `CheckPublishAuthCookie`, `GetPathPasswordByPublishAccess`, `c",
    "evidence": "osv:GHSA-vg99-7gj7-2fr5",
    "products": [
      {
        "name": {
          "value": "github.com/siyuan-note/siyuan/kernel",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.0.0-20260812083335-251596fc0de2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "GHSA-vg99-7gj7-2fr5",
      "aliases": [
        "CVE-2026-73606",
        "GHSA-vg99-7gj7-2fr5",
        "GO-2026-6635"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.0.0-20260812083335-251596fc0de2"
                }
              ]
            }
          ],
          "package": {
            "name": "github.com/siyuan-note/siyuan/kernel",
            "purl": "pkg:golang/github.com/siyuan-note/siyuan/kernel",
            "ecosystem": "Go"
          },
          "database_specific": {
            "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-vg99-7gj7-2fr5/GHSA-vg99-7gj7-2fr5.json"
          }
        }
      ],
      "modified": "2026-10-07T17:55:43.026477085Z",
      "provider": "osv",
      "references": [
        "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-vg99-7gj7-2fr5",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-73606",
        "https://github.com/siyuan-note/siyuan",
        "https://github.com/siyuan-note/siyuan/releases/tag/v3.8.0",
        "https://www.vulncheck.com/advisories/siyuan-before-information-disclosure-via-getrefids"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-863"
        ],
        "severity": "MODERATE",
        "github_reviewed": true,
        "nvd_published_at": null,
        "github_reviewed_at": "2026-10-01T16:29:35Z"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-73606",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 97123,
  "published_at": "2026-10-01T16:29:35+00:00"
}

{
  "id": "acfb0604d72ec4788023c11df7c8e0f490e6539ce879b3e6c73398e15627ef94",
  "url": "https://osv.dev/vulnerability/GO-2026-6635",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "SiYuan: The reference filter for getRefIDs checks visibility but not the password tier, disclosing that password-protected documents reference a given block in github.com/siyuan-note/siyuan/kernel",
    "summary": "SiYuan: The reference filter for getRefIDs checks visibility but not the password tier, disclosing that password-protected documents reference a given block in github.com/siyuan-note/siyuan/kernel",
    "evidence": "osv:GO-2026-6635",
    "products": [
      {
        "name": {
          "value": "github.com/siyuan-note/siyuan/kernel",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.0.0-20260812083335-251596fc0de2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "GO-2026-6635",
      "aliases": [
        "CVE-2026-73606",
        "GHSA-vg99-7gj7-2fr5",
        "GO-2026-6635"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.0.0-20260812083335-251596fc0de2"
                }
              ]
            }
          ],
          "package": {
            "name": "github.com/siyuan-note/siyuan/kernel",
            "purl": "pkg:golang/github.com/siyuan-note/siyuan/kernel",
            "ecosystem": "Go"
          },
          "database_specific": {
            "source": "https://vuln.go.dev/ID/GO-2026-6635.json"
          },
          "ecosystem_specific": {}
        }
      ],
      "modified": "2026-10-07T17:45:14.476602710Z",
      "provider": "osv",
      "references": [
        "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-vg99-7gj7-2fr5",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-73606",
        "https://github.com/siyuan-note/siyuan/releases/tag/v3.8.0",
        "https://www.vulncheck.com/advisories/siyuan-before-information-disclosure-via-getrefids"
      ],
      "provider_metadata": {
        "url": "https://pkg.go.dev/vuln/GO-2026-6635",
        "review_status": "UNREVIEWED"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-73606",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 97118,
  "published_at": "2026-10-07T14:09:59+00:00"
}