CVE-2026-54066

SiYuan: Path Traversal via Double URL Encoding in /assets/*path (publish mode arbitrary file─read)

State: Published
Severity: 7.5 High
Published: Jun 24, 2026
Updated: Jun 25, 2026
Reserved: Jun 11, 2026

Description

SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, the patch for CVE-2026-41894 ("Path Traversal via Double URL Encoding") sanitized the /export/ route but the identical root cause remains in the /assets/*path route. In publish mode (anonymous read-only HTTP endpoint, default port 6808), an unauthenticated remote attacker can read arbitrary files inside WorkspaceDir — including conf/conf.json (which contains the AccessAuthCode SHA256 hash, API token, and sync keys), temp/siyuan.db, temp/blocktree.db, and siyuan.log — by double-URL-encoding .. segments. This vulnerability is fixed in 3.7.0.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-23 Relative Path Traversal
CWE-1188 Insecure Default Initialization of Resource

Affected Products

Product	Versions
siyuansiyuan-note	< 3.7.0Affected

References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-p4m3-mgmm-c664

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