Unauthenticated directory enumeration via unrestricted readDir paths
Published Mar 26, 2026 · Updated Mar 26, 2026
Path traversal in SiYuan before 3.6.2 allows remote attackers to enumerate document file names through the publishing service. The /api/file/readDir handler accepts an unauthenticated path and returns entries from attacker-selected workspace directories without restricting the request to the published notebook. A network-reachable publishing service is sufficient; the disclosed result is directory-structure exposure that can guide a separate file-read flaw, not direct document-content disclosure.
Summary
What happened
Path traversal in SiYuan before 3.6.2 allows remote attackers to enumerate document file names through the publishing service. The /api/file/readDir handler accepts an unauthenticated path and returns entries from attacker-selected workspace directories without restricting the request to the published notebook. A network-reachable publishing service is sufficient; the disclosed result is directory-structure exposure that can guide a separate file-read flaw, not direct document-content disclosure.
The record
- CVE
- CVE-2026-33670
- Published
- Mar 26, 2026
- Updated
- Mar 26, 2026
- Vendor
- SiYuan Note
- Product
- SiYuan
- Classifications
- CWE-22, T1083
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 26, 2026CVE publishedPublication date reported by the CVE source.
- Mar 26, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 3.6.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GHSA-xmw9-6r43-x9ww embedded Python PoCproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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