{"id":"CVE-2026-72808","revision":null,"records":[{"revision":"0439b0ed1a254020a8e1e5818e4c1492","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-72808","aliases":[],"title":"SiYuan before v3.7.4 Information Disclosure via getFileAnnotation","description":"SiYuan versions up to and including v3.7.2 (fixed in v3.7.4) contain an information disclosure vulnerability in the /api/asset/getFileAnnotation endpoint, which returns .sya PDF-annotation file content without a publish-access check. Because the endpoint is gated only by CheckAuth (unlike the /assets/* route, which enforces publish access and password), an anonymous reader (when publish authentication is disabled) or any publish RoleReader who knows an asset path can read the private PDF annotations (highlights and notes) of publish-forbidden, password-protected, or unpublished documents. The issue is limited to non-encrypted notebooks; encrypted-box annotations are not exposed.","state":0,"publishedAt":"2026-08-12T19:07:52.034+00:00","modifiedAt":"2026-08-14T16:52:12.956+00:00","affected":[{"ecosystem":"Vendor product","name":"siyuan","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"siyuan-note\",\n                    \"product\": \"siyuan\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:golang/github.com/siyuan-note/siyuan/kernel\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"3.7.4\"\n                        },\n                        {\n                            \"version\": \"3.7.4\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N","score":6.9,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","score":5.8,"severity":"MEDIUM"}],"references":["https://github.com/siyuan-note/siyuan/security/advisories/GHSA-v7ph-r5r6-4jcj","https://www.vulncheck.com/advisories/siyuan-before-information-disclosure-via-getfileannotation"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72808","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-72808","identifiers":["CVE-2026-72808"]},"retained":false,"historicalAffected":[]},{"revision":"2d88c9ba08574589b3d5cc310da97ed8","observedAt":"2026-10-25T15:19:03.401+00:00","statement":{"source":"nvd","id":"CVE-2026-72808","aliases":[],"title":"SiYuan versions up to and including v3.7.2 (fixed in v3.7.4) contain an information disclosure vulnerability in the /api/asset/getFileAnnotation endpoint, which returns .sya PDF-annotation file content without a publish-access check. Becaus…","description":"SiYuan versions up to and including v3.7.2 (fixed in v3.7.4) contain an information disclosure vulnerability in the /api/asset/getFileAnnotation endpoint, which returns .sya PDF-annotation file content without a publish-access check. Because the endpoint is gated only by CheckAuth (unlike the /assets/* route, which enforces publish access and password), an anonymous reader (when publish authentication is disabled) or any publish RoleReader who knows an asset path can read the private PDF annotations (highlights and notes) of publish-forbidden, password-protected, or unpublished documents. The issue is limited to non-encrypted notebooks; encrypted-box annotations are not exposed.","state":0,"publishedAt":"2026-08-12T20:17:52.967+00:00","modifiedAt":"2026-10-24T15:10:00.19+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · disclosure@vulncheck.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":6.9,"severity":"MEDIUM"},{"system":"CVSS 3.1 · disclosure@vulncheck.com · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","score":5.8,"severity":"MEDIUM"}],"references":["https://github.com/siyuan-note/siyuan/security/advisories/GHSA-v7ph-r5r6-4jcj","https://www.vulncheck.com/advisories/siyuan-before-information-disclosure-via-getfileannotation"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72808","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-862"],"productCriteria":[],"sourceDates":{"published":"2026-08-12T20:17:52.967","lastModified":"2026-10-24T15:10:00.190"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-72808","identifiers":["CVE-2026-72808"]},"retained":false,"historicalAffected":[]},{"revision":"dad513760a284f85b0ea3a0a6d6d7cee","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-v7ph-r5r6-4jcj","aliases":["CVE-2026-72808","GO-2026-6406"],"title":"SiYuan: Missing publish-access filter on getFileAnnotation discloses private PDF annotations of forbidden/protected documents (publish mode)","description":"**CVE:** This vulnerability corresponds to [CVE-2026-72808](https://nvd.nist.gov/vuln/detail/CVE-2026-72808).\n\n### Summary\n\nThe `/api/asset/getFileAnnotation` endpoint returns the content of `.sya` PDF-annotation files with no publish-access check. It is gated by `CheckAuth` only, so it is reachable by the publish `RoleReader` token and by the anonymous account when `Publish.Auth.Enable` is `false`. Its sibling, the `/assets/*` asset route does enforce publish access, including the publish password. An anonymous reader who knows an asset path can therefore read the private PDF annotations (highlights, notes) attached to assets in publish-forbidden, password-protected, or unpublished documents.\n\n### Details\n\n`getFileAnnotation` resolves the annotation file via `GetAssetAbsPathInBox` (no path traversal) and returns the `.sya` content. Unlike the `/assets/*` route, which applies the publish-access filter including password enforcement before serving asset bytes, `getFileAnnotation` applies no publish-access, publish-ignore, or password check. The guarded-sibling asymmetry indicates the boundary is meant to apply to this data and was omitted here.\n\n`.sya` files for encrypted-box assets are fail-closed and not exposed. The gap is limited to non-encrypted assets.\n\n**Route / auth tier.** `getFileAnnotation` is registered `CheckAuth`-only. `CheckAuth` admits `RoleReader`; the publish proxy forwards port-6808 traffic with a Reader JWT (anonymous when publish auth is disabled).\n\n### Proof of Concept\n\nReproduced on a local instance (publish mode on 6808, Basic Auth off).\n\n**Setup (admin, 6806):**\n1. `createNotebook{name:\"AnnotPoc\"}` → box\n2. `createDocWithMd{notebook, path:\"/annot-victim\", markdown:\"doc with a pdf\"}` → doc\n3. `POST /api/asset/upload` (multipart `id=<doc>`, `file[]=@secret.pdf`) → `assets/secret-...pdf`\n4. `setFileAnnotation{path:\"<asset>.sya\", data:\"{annotSecret:ANNOT_SECRET_4471,note:private highlight}\"}`\n5. `setPublishAccess{id:<doc>, visible:false, password:\"\", disable:true}` → doc forbidden\n\n**Exploit (anonymous reader, 6808, no token):**\n```\nPOST http://127.0.0.1:6808/api/asset/getFileAnnotation\n{\"path\":\"assets/secret-...pdf.sya\"}\n```\nReturns:\n```\n{\"code\":0,\"data\":{\"data\":\"{\\\"annotSecret\\\":\\\"ANNOT_SECRET_4471\\\",\\\"note\\\":\\\"private highlight\\\"}\"}}\n```\nThe annotation content of a publish-forbidden document is returned to an anonymous reader with no publish-access check, while the `/assets/*` route serving the same asset class enforces publish access and password.\n\n### Impact\n\nAn anonymous reader (publish mode with auth disabled) or any publish `RoleReader` can read the private PDF annotations (highlights and notes) of assets belonging to publish-forbidden, password-protected, or unpublished documents, given the asset path. This defeats the publish-access/password boundary for annotation data. Scope is limited to annotated PDFs in non-encrypted notebooks; encrypted-box annotations are not exposed. Confidentiality-only.\n\n### Suggested fix\n\nApply the same publish-access check the `/assets/*` route uses to `getFileAnnotation` resolve the asset's owning document and enforce the publish-access/publish-ignore / password check before returning `.sya` content.","state":0,"publishedAt":"2026-09-03T22:48:22+00:00","modifiedAt":"2026-09-10T15:26:02.5905259+00:00","affected":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.0.0-20260723031702-509b35055940"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/siyuan-note/siyuan/security/advisories/GHSA-v7ph-r5r6-4jcj","https://nvd.nist.gov/vuln/detail/CVE-2026-72808","https://github.com/siyuan-note/siyuan/commit/509b35055940856ec1c89cb4888723c4660b776a","https://github.com/siyuan-note/siyuan","https://www.vulncheck.com/advisories/siyuan-before-information-disclosure-via-getfileannotation"],"sourceUrl":"https://github.com/advisories/GHSA-v7ph-r5r6-4jcj","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-v7ph-r5r6-4jcj","identifiers":["GHSA-v7ph-r5r6-4jcj","CVE-2026-72808","GO-2026-6406"]},"retained":false,"historicalAffected":[]},{"revision":"b9cbc16c38854c0db53584d9e86295d3","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-6406","aliases":["CVE-2026-72808","GHSA-v7ph-r5r6-4jcj"],"title":"SiYuan: Missing publish-access filter on getFileAnnotation discloses private PDF annotations of forbidden/protected documents (publish mode) in github.com/siyuan-note/siyuan/kernel","description":"SiYuan: Missing publish-access filter on getFileAnnotation discloses private PDF annotations of forbidden/protected documents (publish mode) in github.com/siyuan-note/siyuan/kernel","state":0,"publishedAt":"2026-09-10T14:48:42+00:00","modifiedAt":"2026-09-10T15:15:14.1188556+00:00","affected":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.0.0-20260723031702-509b35055940"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/siyuan-note/siyuan/security/advisories/GHSA-v7ph-r5r6-4jcj","https://nvd.nist.gov/vuln/detail/CVE-2026-72808","https://github.com/siyuan-note/siyuan/commit/509b35055940856ec1c89cb4888723c4660b776a","https://www.vulncheck.com/advisories/siyuan-before-information-disclosure-via-getfileannotation"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-6406","license":"OSV · upstream source license applies","key":"osv:GO-2026-6406","identifiers":["GO-2026-6406","CVE-2026-72808","GHSA-v7ph-r5r6-4jcj"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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