GHSA-8wx9-j7j5-h9vp
Suggest an improvement- Source
- https://github.com/advisories/GHSA-8wx9-j7j5-h9vp
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-8wx9-j7j5-h9vp/GHSA-8wx9-j7j5-h9vp.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-8wx9-j7j5-h9vp
- Withdrawn
- 2026-09-03T22:32:26Z
- Published
- 2026-08-12T21:31:42Z
- Modified
- 2026-09-03T22:45:04Z
- Severity
-
- 8.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H CVSS Calculator
- 7.1 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/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 CVSS Calculator
- Summary
- Duplicate Advisory: Localhost-trust admin bypass on auth-code-gated endpoints, with potential remote reachability via the fixed-port prox
- Details
-
Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-3mp7-4rh5-jrv9. This link is maintained to preserve external references.
Original Description
SiYuan versions <= v3.7.2 (patched in v3.7.4) contain an authentication bypass vulnerability in the kernel's CheckAuth function, which grants the administrator role (RoleAdministrator) to any request whose RemoteAddr is loopback (127.0.0.1) for a specific set of endpoints (including /api/system/exit, getNetwork, getWorkspaceInfo, /assets/, and /export/). These localhost bypasses sit outside the access auth code gate, so they apply even when an access auth code is configured. Because the fixed-port reverse proxy forwards requests to the kernel over loopback without injecting an authentication token and does not configure trusted proxies, a request forwarded through this proxy reaches the kernel with RemoteAddr = 127.0.0.1. If the fixed-port proxy is bound to a network interface, this could allow a remote unauthenticated attacker to obtain admin access on the affected endpoints; however, per the advisory this remote forwarding behavior was established only by code inspection and was not reproduced end-to-end.
- Database specific
{ "cwe_ids": [ "CWE-290" ], "github_reviewed": true, "github_reviewed_at": "2026-09-03T22:32:26Z", "nvd_published_at": "2026-08-12T20:17:53Z", "severity": "HIGH" }- References
Affected packages
Go / github.com/siyuan-note/siyuan/kernel
Package
- Name
- github.com/siyuan-note/siyuan/kernel
- View open source insights on deps.dev
- Purl
- pkg:golang/github.com/siyuan-note/siyuan/kernel