CVE-2026-25992: Github.com/siyuan note/siyuan/kernel Path Traversal Vulnerability
HIGHCVE-2026-25992 is a HIGH (CVSS 7.5) path traversal vulnerability (CWE-426: Untrusted Search Path) affecting Github.com/siyuan note/siyuan/kernel libraries in the Go ecosystem. The issue involves siyuan file read api case sensitivity bypass can lead to path traversal. Remediation is available in the latest vendor maintenance releases.
CVE-2026-25992 at a Glance
Security Impact
CVSS: 7.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
How to Fix CVE-2026-25992
To remediate this vulnerability, upgrade all affected Github.com/siyuan note/siyuan/kernel dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/siyuan-note/siyuan/kernel to Latest secure releaseRun the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/siyuan-note/siyuan/kernelHow to Check if You Are Affected
To determine whether your application is affected by CVE-2026-25992, inspect your project dependencies for Github.com/siyuan note/siyuan/kernel:
inspect dependencies for github.com/siyuan-note/siyuan/kernelAnalyze the terminal output to locate any version of Github.com/siyuan note/siyuan/kernel in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-426: Untrusted Search Path, where the product searches for critical resources using an externally-supplied search path that can point to resources that are not under the product's direct control. In Github.com/siyuan note/siyuan/kernel, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-25992 Affected Github.com/siyuan note/siyuan/kernel Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/siyuan-note/siyuan/kernel
|
Go |
≤ 0.0.0-20260126094835-d5d10dd41b0c
|
|
References
Frequently Asked Questions
What is CVE-2026-25992?
Which Github.com/siyuan note/siyuan/kernel versions are affected?
What version fixes CVE-2026-25992?
Is github.com/siyuan-note/siyuan/kernel affected?
What is the CVSS score of CVE-2026-25992?
What CWE is associated with CVE-2026-25992?
How can I check Go dependencies for CVE-2026-25992?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-f72r-2h5j-7639",
"modified" : "2026-02-10T19:56:53Z",
"published" : "2026-01-28T23:00:57Z",
"aliases" : [ "CVE-2026-25992" ],
"summary" : "SiYuan File Read API Case Sensitivity Bypass can Lead to Path Traversal",
"details" : "# File Read Interface Case Bypass Vulnerability\n## Vulnerability Name\nFile Read Interface Case Bypass Vulnerability\n\n## Overview\nThe `/api/file/getFile` endpoint uses **case-sensitive string equality checks** to block access to sensitive files.\nOn case-insensitive file systems such as **Windows**, attackers can bypass restrictions using mixed-case paths\nand read protected configuration files.\n\n## Impact\n- Read sensitive information in configuration files (e.g., access codes, API Tokens, sync configurations, etc.).\n- Remotely exploitable directly when the service is published without authentication.\n\n## Trigger Conditions\n- Running on a **case-insensitive file system**.\n- The caller can access `/api/file/getFile` (via CheckAuth or Token injection in published services).\n\n## PoC (Generic Example)\nAfter enabling publication:\n\n**Request:**\n```http\nPOST /api/file/getFile\nContent-Type: application/json\n\n{\"path\":\"cOnf/conf.json\"}\n```\n\n**Expected Result:**\n- Successfully return the content of the configuration file.\n\n## Root Cause\nPath comparison uses strict case-sensitive string matching, without case normalization or identical file validation.\n\n## Fix Recommendations\n- Normalize path casing before comparison (Windows/macOS).\n- Use file-level comparison methods such as `os.SameFile`.\n- Apply blacklist validation on sensitive paths **after case normalization**.\n\n## Notes\n- Environment identifiers and sensitive information have been removed.\n\n## Solution Commit\n`399a38893e8719968ea2511e177bb53e09973fa6`",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
}, {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/siyuan-note/siyuan/kernel"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"last_affected" : "0.0.0-20260126094835-d5d10dd41b0c"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f72r-2h5j-7639"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-25992"
}, {
"type" : "WEB",
"url" : "https://github.com/siyuan-note/siyuan/commit/1f02650b3892d2ea3896242dd2422c30bda55e11"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/siyuan-note/siyuan"
}, {
"type" : "WEB",
"url" : "https://github.com/siyuan-note/siyuan/releases/tag/v3.5.5"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-178", "CWE-22", "CWE-426" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-01-28T23:00:57Z",
"nvd_published_at" : "2026-02-10T18:16:38Z"
}
}