GHSA-2mmh-4rf8-7xg6

Source

https://github.com/advisories/GHSA-2mmh-4rf8-7xg6

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-2mmh-4rf8-7xg6/GHSA-2mmh-4rf8-7xg6.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-2mmh-4rf8-7xg6

Withdrawn

2026-09-03T21:21:12Z

Published

2026-08-03T15:32:47Z

Modified

2026-09-03T21:30:04Z

Severity

8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
9.2 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/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: SiYuan: Cross-boundary content disclosure via getBacklinkDoc/getBackmentionDoc (publish mode): reader-reachable rendered DOM of publish-forbidden docs; sibling list endpoints are filtered

Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-36v8-mpjm-8j5r. This link is maintained to preserve external references.

Original Description

SiYuan before v3.7.3 fails to apply publish-access filters to the getBacklinkDoc and getBackmentionDoc content endpoints (/api/ref/getBacklinkDoc and /api/ref/getBackmentionDoc). While the corresponding backlink list endpoints filter publish-forbidden documents, the content endpoints (gated only by CheckAuth) do not. A publish-mode reader — including an anonymous reader when publish Basic Auth is disabled — can call these endpoints directly with a publish-forbidden document's ID to retrieve its rendered DOM content and to determine whether the document references a given block (a reference-existence oracle).

Database specific

{
    "cwe_ids": [
        "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-03T21:21:12Z",
    "nvd_published_at": "2026-08-03T14:16:28Z",
    "severity": "CRITICAL"
}

References

Affected packages

npm / siyuan

Package

Name: siyuan; View open source insights on deps.dev
Purl: pkg:npm/siyuan

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Last Affected

3.7.2

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-2mmh-4rf8-7xg6/GHSA-2mmh-4rf8-7xg6.json"