Protected-document disclosure via unchecked content endpoints
Published Aug 3, 2026 · Updated Aug 3, 2026
Authentication bypass in SiYuan before 3.7.3 allows remote attackers to read password-protected documents through publish-mode APIs. The getHeadingChildrenDOM, getHeading*Transaction, and getBacklinkDoc handlers return rendered block DOM from attacker-supplied block IDs without applying the publish-password check used by getDoc. Publish mode with authentication disabled or RoleReader access is required; leaked internal block IDs expose document content but do not permit modification.
Summary
What happened
Authentication bypass in SiYuan before 3.7.3 allows remote attackers to read password-protected documents through publish-mode APIs. The getHeadingChildrenDOM, getHeading*Transaction, and getBacklinkDoc handlers return rendered block DOM from attacker-supplied block IDs without applying the publish-password check used by getDoc. Publish mode with authentication disabled or RoleReader access is required; leaked internal block IDs expose document content but do not permit modification.
The record
- CVE
- CVE-2026-68584
- Published
- Aug 3, 2026
- Updated
- Aug 3, 2026
- Vendor
- SiYuan Note
- Product
- SiYuan
- Classifications
- CWE-288, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 3, 2026CVE publishedPublication date reported by the CVE source.
- Aug 3, 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=0 <3.7.3
What conditions does exploitation require?
What is affected?
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-7j72-f6wg-cxw6 proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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