SiYuan: Second-order SSTI to arbitrary SQL via attribute-view template column (queryBlocks): malicious imported package executes SQL on victim kernel

Exploitation

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

CVSS

8.0 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

EPSS

• CVE-2026-72807: 0.33% estimated exploitation activity in the next 30 days; percentile 26.58 (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-2026-72807. Summary Attribute-view (AV) template columns are live-evaluated on every render and expose the queryBlocks template function, which runs raw SQL on the read-write database handle (SelectBlocksRawStmt, using ?→argument string substitution rather than parameter binding). AV mutations are admin-gated, so this is not directly reader-injectable but it is a second-order vector: an attacker distributes a SiYuan document or AV package whose template column contains .action{queryBlocks "<arbitrary SQL"} when a victim imports the package and renders the AV, the attacker's SQL executes on the victim's kernel (read and, via statement stacking, write). Details Doc-level {{…}} templates are rendered at insert-time and become static, so they are not re-evaluated on reader view. The residual is AV template columns, which are live-evaluated at render. queryBlocks passes its argument to SelectBlocksRawStmt with ?→arg string substitution, not a…

Published by the source

3 Sep 2026, 22:49 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-x67c-8pwr-m8g3

2. Revision 2 · amended · 24 Oct 2026

   Amended from osv record GO-2026-6410

3. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-x67c-8pwr-m8g3

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# Patch Next advisory brief: CVE-2026-72807

Advisory: SiYuan: Second-order SSTI to arbitrary SQL via attribute-view template column (queryBlocks): malicious imported package executes SQL on victim kernel
IDs: CVE-2026-72807, GHSA-x67c-8pwr-m8g3
Record: https://patchnext.com/advisories/cve-2026-72807 (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 8.0)
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 0.0.0-20260723035036-0a176345e02a. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/siyuan-note/siyuan/kernel: affected < 0.0.0-20260723035036-0a176345e02a; fixed in 0.0.0-20260723035036-0a176345e02a

## 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-x67c-8pwr-m8g3 (OSV record GHSA-x67c-8pwr-m8g3 lists affected ranges: Go github.com/siyuan-note/siyuan/kernel >=0 <0.0.0-20260723035036-0a176345e02a (fixed))
- Verified: https://osv.dev/vulnerability/GO-2026-6410 (OSV record GO-2026-6410 lists affected ranges: Go github.com/siyuan-note/siyuan/kernel >=0 <0.0.0-20260723035036-0a176345e02a (fixed))
- Verified: https://github.com/advisories/GHSA-x67c-8pwr-m8g3 (GitHub-reviewed advisory GHSA-x67c-8pwr-m8g3 lists affected ranges: Go github.com/siyuan-note/siyuan/kernel >=0 <0.0.0-20260723035036-0a176345e02a)

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