---
id: CVE-2026-73047
title: >-
  siyuan versions <= 3.7.3 (fixed in v3.7.4) contain a server-side template
  injection vulnerability in the attribute-view Template calculation feature
  (introduced in v3.7.0-beta.1)
summary: >-
  siyuan versions <= 3.7.3 (fixed in v3.7.4) contain a server-side template
  injection vulnerability in the attribute-view Template calculation feature
  (introduced in v3.7.0-beta.1). The feature's template engine uses Sprig's
  unmodified fun…
severity: medium
cvss: 6.2
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-200
published: '2026-08-15'
updated: '2026-08-15'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73047'
references:
  - url: >-
      https://github.com/siyuan-note/siyuan/security/advisories/GHSA-v97v-gxxg-rhmq
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/siyuan-before-server-side-template-injection-via-attribute-view
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-08-16T13:39:04.319Z'
epss: 0.00133
epssPercentile: 0.03201
---

## Overview

siyuan versions <= 3.7.3 (fixed in v3.7.4) contain a server-side template injection vulnerability in the attribute-view Template calculation feature (introduced in v3.7.0-beta.1). The feature's template engine uses Sprig's unmodified function map, which still exposes the env, expandenv, and getHostByName functions that were removed elsewhere for CVE-2024-55660. A local, unauthenticated attacker (the kernel binds to 127.0.0.1 by default with no per-UID access control) can inject a malicious Template calculation formula to read environment variables belonging to the account running siyuan — including from a separate, unprivileged OS account — and to perform DNS lookups from the server's network position.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.