CVE-2026-54066CWE-1188CWE-22CWE-23

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

High · published June 24, 2026

CVSS v3.1
7.5
EPSS
2%
Percentile
83.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.02386 · 83.8th percentile
Weaknesses
CWE-1188 · Initialization of a Resource with an Insecure Default; CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'); CWE-23 · Relative Path Traversal
Published
2026-06-24T21:13Z
EPSS history
Timeline
  • 24 JUN 21:13Z
    SiYuan: Path Traversal via Double URL Encoding in /assets/*path (publish mode arbitrary file─read)
    cvelistv5