---
id: "CVE-2026-126266"
page: "https://infrastack.ai/live/CVE-2026-126266"
kind: "vulnerability"
aliases: ["CVE-2026-126266"]
title: "SiYuan: unauthenticated publish visitors can read password-protected document text"
severity: "high"
cvss: 8.7
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "publishing", "self-hosted", "siyuan"]
not_affected_if: ["no-password-protected-docs", "publishing-disabled", "version-3.8.9-or-later"]
published_at: "2026-11-13T10:17:29+00:00"
first_seen_at: "2026-11-13T10:47:12+00:00"
updated_at: "2026-11-13T10:50:36+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-126266", "first_seen_at": "2026-11-13T10:47:12+00:00"}]
exploit_sources: []
---

# SiYuan: unauthenticated publish visitors can read password-protected document text

Link for people: https://infrastack.ai/live/CVE-2026-126266 (this .md is for agents)

SiYuan versions from 3.6.0 before 3.8.9 let unauthenticated visitors to a published site bypass per-document passwords through a regex search on the getDoc endpoint. An attacker can read the body text of protected documents from the keywords field of the response.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the SiYuan version in the app's About page or the running build; versions `3.6.0` through `3.8.9` (exclusive) are affected.
- Check whether publishing is enabled and whether any published documents use per-document passwords.

## Fix

- SiYuan: move to `3.8.9` or later.

## Timeline

- 2026-11-13T10:47:12+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-126266

## Documents

- [advisory] Vendor advisory: github.com https://github.com/siyuan-note/siyuan/security/advisories/GHSA-qf37-w288-frvq
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/siyuan-from-3.6.0-before-3.8.9-publish-password-bypass-via-getdoc-regex-keywords

## From the sources

SiYuan from 3.6.0 before 3.8.9 contains an information disclosure vulnerability that allows unauthenticated publish visitors to bypass per-document passwords via regex search in getDoc. Attackers can send POST requests to /api/filetree/getDoc with queryMethod 3 and a broad regex to read protected body text returned in the unfiltered keywords field.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_