Summary
SiYuan: getEncryptedNotebookStatus discloses names and current lock/unlock state of all encrypted notebooks to anonymous readers
CVE: This vulnerability corresponds to CVE-2026-72797.
POST /api/notebook/getEncryptedNotebookStatus returns the identifier, name, and current lock state of every encrypted notebook, with no publish-access filtering. The route is registered CheckAuth only, no CheckReadonly, no CheckAdminRole so it is reachable by the publish RoleReader token and by the anonymous account when Publish.Auth.Enable is false. Encrypted notebooks are private by design; their names frequently reveal the sensitive topic that motivated encrypting them.
Details
Route registration (kernel/api/router.go:131):
ginServer.Handle("POST", "/api/notebook/getEncryptedNotebookStatus", model.CheckAuth, getEncryptedNotebookStatus)
The handler (kernel/api/notebook.go) accepts no arguments and contains no IsReadOnlyRoleContext branch and no publish-access filter of any kind. It returns, for every encrypted notebook, {id, name, unlocked}, the notebook's box.Name and its live lock state together with enabled, count, migrationPending, migrationBoxes, and hasHistoryDependency.
Guarded-sibling asymmetry. The primary notebook listing lsNotebooks, in the same file and also reader-reachable, does filter: it skips notebooks that are Closed and any notebook whose publishAccess entry is not Visible. The project therefore publish-scopes notebook listings but getEncryptedNotebookStatus enumerates all encrypted notebooks unconditionally.
Still unfixed at HEAD. The encrypted-notebook hardening series (issue #18034 idle auto-lock, lock-on-background, key handling, atomic unlock) is local-threat work. Commit f2d966659 ("Expose encrypted notebook unlock status to plugins") introduced this exposure, and no subsequent commit gates it for the publish/reader boundary.
Secondary effect. unlocked: true is a live indicator of exactly when an encrypted notebook's plaintext is resident in memory, the window during which reader-reachable code paths that accept a notebook argument can read its decrypted content.
Proof of Concept
Precondition: publish mode enabled (default port 6808); anonymous when Publish.Auth.Enable is false, otherwise any publish reader account. At least one encrypted notebook exists.
POST http://127.0.0.1:6808/api/notebook/getEncryptedNotebookStatus
{}
Returns the full set of encrypted notebooks with their IDs, names, and current unlocked state including notebooks that lsNotebooks withholds from the same reader session. No arguments and no privileged access are required.
Impact
An anonymous reader (publish mode with auth disabled) or any publish RoleReader learns which encrypted notebooks exist, what they are called, and whether each is currently unlocked. Notebook names are themselves sensitive: a user encrypts a notebook precisely because its subject matter is private, and the name commonly states that subject. Disclosing existence and naming to unauthenticated parties defeats that expectation, and the live lock state additionally reveals when the notebook's contents are decrypted in memory. Confidentiality-only.
The application does not perform an authorization check before performing a sensitive operation. Typical impact: unauthorized access to restricted functionality or data.
CVE-2026-72797 has a CVSS score of 5.8 (Medium). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (0.0.0-20260724123622-8fb1b5766093); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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For IsReadOnlyRoleContext sessions, either reject the request or restrict the response to notebooks that are publish-visible, mirroring the filtering already applied in lsNotebooks. Encrypted notebooks arguably should never be enumerated to a reader at all.
Frequently Asked Questions
- What is CVE-2026-72797? CVE-2026-72797 is a medium-severity missing authorization vulnerability in github.com/siyuan-note/siyuan/kernel (go), affecting versions < 0.0.0-20260724123622-8fb1b5766093. It is fixed in 0.0.0-20260724123622-8fb1b5766093. The application does not perform an authorization check before performing a sensitive operation.
- How severe is CVE-2026-72797? CVE-2026-72797 has a CVSS score of 5.8 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of github.com/siyuan-note/siyuan/kernel are affected by CVE-2026-72797? github.com/siyuan-note/siyuan/kernel (go) versions < 0.0.0-20260724123622-8fb1b5766093 is affected.
- Is there a fix for CVE-2026-72797? Yes. CVE-2026-72797 is fixed in 0.0.0-20260724123622-8fb1b5766093. Upgrade to this version or later.
- Is CVE-2026-72797 exploitable, and should I be worried? Whether CVE-2026-72797 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2026-72797 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2026-72797? Upgrade
github.com/siyuan-note/siyuan/kernelto 0.0.0-20260724123622-8fb1b5766093 or later.