SiYuan: Path Traversal via unvalidated avID in RenderAttributeView/AV read endpoints : reader-reachable cross-scope attribute-view disclosure

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

7.7 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

EPSS

• CVE-2026-69086: 0.53% estimated exploitation activity in the next 30 days; percentile 45.00 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

CVE: This vulnerability corresponds to CVE-2026-69086. Summary Four attribute-view read endpoints build a filesystem path from a caller-controlled id/avID and read it without confining the result to the attribute-view storage directory (DataDir/storage/av/). On the load (file-exists) code path there is no boundary check, so an avID containing ../ segments escapes storage/av/ and causes the kernel to read a .json file elsewhere in the workspace. The endpoints require only CheckAuth, which the publish service's RoleReader token satisfies; when Publish.Auth.Enable is false the publish proxy uses the anonymous account, making the surface reachable with no credentials. Details Affected endpoints (all gated by CheckAuth only, no CheckAdminRole): - POST /api/av/renderAttributeView  → arg["id"] - POST /api/av/getAttributeViewKeysByID → arg["avID"] - POST /api/av/getAttributeViewKeys  → arg["id"] - POST /api/av/getCurrentAttrViewImages → arg["id"] In model.RenderAttributeView…

Published by the source

3 Sep 2026, 20:34 UTC

Last modified by the source

10 Sep 2026, 15:15 UTC

Source last checked

26 Oct 2026, 15:29 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-7hm9-v7vf-7g4w

2. Revision 2 · amended · 24 Oct 2026

   Amended from osv record GO-2026-6373

3. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-7hm9-v7vf-7g4w

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# Patch Next advisory brief: CVE-2026-69086

Advisory: SiYuan: Path Traversal via unvalidated avID in RenderAttributeView/AV read endpoints : reader-reachable cross-scope attribute-view disclosure
IDs: CVE-2026-69086, GHSA-7hm9-v7vf-7g4w
Record: https://patchnext.com/advisories/cve-2026-69086 (revision 3, source checked 26 Oct 2026, 15:29 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.7)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: github.com/siyuan-note/siyuan/kernel 0.0.0-20260720151813-0f5a0e7c67b0. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/siyuan-note/siyuan/kernel: affected < 0.0.0-20260720151813-0f5a0e7c67b0; fixed in 0.0.0-20260720151813-0f5a0e7c67b0

## Suggested inspection (read-only)
- Go github.com/siyuan-note/siyuan/kernel: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/siyuan-note/siyuan/kernel.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-7hm9-v7vf-7g4w (OSV record GHSA-7hm9-v7vf-7g4w lists affected ranges: Go github.com/siyuan-note/siyuan/kernel >=0 <0.0.0-20260720151813-0f5a0e7c67b0 (fixed))
- Verified: https://osv.dev/vulnerability/GO-2026-6373 (OSV record GO-2026-6373 lists affected ranges: Go github.com/siyuan-note/siyuan/kernel >=0 <0.0.0-20260720151813-0f5a0e7c67b0 (fixed))
- Verified: https://github.com/advisories/GHSA-7hm9-v7vf-7g4w (GitHub-reviewed advisory GHSA-7hm9-v7vf-7g4w lists affected ranges: Go github.com/siyuan-note/siyuan/kernel >=0 <0.0.0-20260720151813-0f5a0e7c67b0)

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