---
id: CVE-2026-72793
title: >-
  SiYuan versions before v3.7.4 fail to mask sensitive configuration fields in
  the /api/system/getConf endpoint, allowing anonymous or publish-reader users
  to obtain the session-cookie signing key, OS username via pandoc path, and
  encrypte…
summary: >-
  SiYuan versions before v3.7.4 fail to mask sensitive configuration fields in
  the /api/system/getConf endpoint, allowing anonymous or publish-reader users
  to obtain the session-cookie signing key, OS username via pandoc path, and
  encrypte…
severity: high
cvss: 8.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-522
published: '2026-08-12'
updated: '2026-08-14'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-72793'
references:
  - url: >-
      https://github.com/siyuan-note/siyuan/security/advisories/GHSA-h4v5-crx2-3cv4
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/siyuan-before-information-disclosure-via-api-system-getconf
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/siyuan-note/siyuan/security/advisories/GHSA-h4v5-crx2-3cv4
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00409
epssPercentile: 0.32439
ingestedAt: '2026-08-15T21:29:27.105Z'
---

## Overview

SiYuan versions before v3.7.4 fail to mask sensitive configuration fields in the /api/system/getConf endpoint, allowing anonymous or publish-reader users to obtain the session-cookie signing key, OS username via pandoc path, and encrypted-notebook key material. Attackers can forge and tamper with session cookies to impersonate users, and on instances without access-auth codes configured, escalate to administrator privileges.

## Remediation

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