---
title: "CVE-2026-30869: SiYuan Vulnerable to Path Traversal in /export Endpoint Allows Arbitrary File Read and Secret Leakage"
url: https://erroneo.us/security/cve/CVE-2026-30869/
description: "CVE-2026-30869 (github.com/siyuan-note/siyuan/kernel (Go)): SiYuan is a personal knowledge management system. Prior to 3.5.10, a path traversal…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-03-09
date_modified: 2026-03-10
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-30869"
kev: false
cvss: 9.3
epss: 0.01174
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-30869: SiYuan Vulnerable to Path Traversal in /export Endpoint Allows Arbitrary File Read and Secret Leakage

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 1.2% , percentile 67: FIRST’s model estimates a 1.2% chance of exploitation activity in the next 30 days, higher than 67% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes github.com/siyuan-note/siyuan/kernel (Go) <= 3.5.9, fixed in 3.5.10 . Check your lockfile, including transitive dependencies.

## What it is

SiYuan is a personal knowledge management system. Prior to 3.5.10, a path traversal vulnerability in the /export endpoint allows an attacker to read arbitrary files from the server filesystem. By exploiting double‑encoded traversal sequences, an attacker can access sensitive files such as conf/conf.json, which contains secrets including the API token, cookie signing key, and workspace access authentication code. Leaking these secrets may enable administrative access to the SiYuan kernel API, and in certain deployment scenarios could potentially be chained into remote code execution (RCE). This vulnerability is fixed in 3.5.10.

## Affected packages

- Go `github.com/siyuan-note/siyuan/kernel` <= 3.5.9 → fixed: 3.5.10

## Affected products (CVE record)

- siyuan-note siyuan: < 3.5.10

## Severity

- GitHub_M CVSS 3.1: 9.3 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L`
- GitHub CVSS 3.1: 9.3 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact partial .
- FIRST EPSS (model of 2026-10-21): 1.17% probability of exploitation activity in the next 30 days; percentile 67.

## Sources

- [GitHub Advisory GHSA-2h2p-mvfx-868w](https://github.com/advisories/GHSA-2h2p-mvfx-868w)
- [CVE.org record CVE-2026-30869](https://www.cve.org/CVERecord?id=CVE-2026-30869)
- [NVD entry CVE-2026-30869](https://nvd.nist.gov/vuln/detail/CVE-2026-30869)
- [github.com](https://github.com/siyuan-note/siyuan/security/advisories/GHSA-2h2p-mvfx-868w)

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Source page: https://erroneo.us/security/cve/CVE-2026-30869/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt