EUVD-2026-17683
GHSA-c77m-r996-jr3q
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
4DescriptionGitHub Advisory
SiYuan is a personal knowledge management system. Prior to version 3.6.2, the publish service exposes bookmarked blocks from password-protected documents to unauthenticated visitors. In publish/read-only mode, /api/bookmark/getBookmark filters bookmark results by calling FilterBlocksByPublishAccess(nil, ...). Because the filter treats a nil context as authorized, it skips the publish password check and returns bookmarked blocks from documents configured as Protected. As a result, anyone who can access the publish service can retrieve content from protected documents without providing the required password, as long as at least one block in the document is bookmarked. This issue has been patched in version 3.6.2.
AnalysisAI
Unauthenticated information disclosure in SiYuan personal knowledge management system versions before 3.6.2 allows remote attackers to retrieve confidential content from password-protected documents via the publish service's bookmark API endpoint. The vulnerability bypasses document-level access controls by treating nil authentication contexts as authorized during bookmark filtering, exposing any bookmarked blocks without password verification. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | SiYuan versions prior to 3.6.2 with publish service enabled. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This represents a significant information disclosure risk for organizations and individuals using SiYuan's publish feature to share selective content while protecting sensitive documents. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker discovers a SiYuan publish service URL shared by a researcher who has published selected notes while password-protecting documents containing proprietary research data. The attacker sends an unauthenticated GET request to /api/bookmark/getBookmark without providing any password credentials. … |
| Remediation | Vendor-released patch: version 3.6.2. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all SiYuan deployments and document current versions in use. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Share
External POC / Exploit Code
Leaving vuln.today