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Critical 9.3Published Mar 9, 2026

CVE-2026-30869SiYuan has a Path Traversal in /export Endpoint Allows Arbitrary File Read and Secret Leakage

Updated under an hour ago ()

Does this affect you?

It affects siyuan-note siyuan and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

SiYuan is a personal knowledge management system. Prior to 3.5.10, a path traversal vulnerability in the /export endpoint allows an attacker to read arbitrary files from the server filesystem. By exploiting double‑encoded traversal sequences, an attacker can access sensitive files such as conf/conf.json, which contains secrets including the API token, cookie signing key, and workspace access authentication code. Leaking these secrets may enable administrative access to the SiYuan kernel API, and in certain deployment scenarios could potentially be chained into remote code execution (RCE). This vulnerability is fixed in 3.5.10.

CVSS
9.3 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L
Weakness (CWE)
CWE-22
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Analyzed
Record last updated
Mar 10, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
siyuan-note siyuan
siyuan_note:siyuan (from the name)
before 3.5.10
CNA record
b3log siyuan
b3log:siyuan
before 3.5.10
NVD

References

  • x-refsource-confirm, exploit, vendor-advisory

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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