Vulnerability Description
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 Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| B3Log | Siyuan | < 3.5.10 |
Related Weaknesses (CWE)
References
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-2h2p-mvfx-868wExploitVendor Advisory
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-2h2p-mvfx-868wExploitVendor Advisory
FAQ
What is CVE-2026-30869?
CVE-2026-30869 is a vulnerability with a CVSS score of 9.3 (CRITICAL). 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 expl...
How severe is CVE-2026-30869?
CVE-2026-30869 has been rated CRITICAL with a CVSS base score of 9.3/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-30869?
Check the references section above for vendor advisories and patch information. Affected products include: B3Log Siyuan.