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CVE-2026-116168VulnerabilityPublished 10/25/2026

CVE-2026-116168: siyuan · Path Traversal

Affects siyuan-note siyuanSource CVE Database V5

0

Not known to be exploited · CVSS 6.9 Medium · fixed in 3.8.7 : update siyuan-note siyuan when convenient.

Data as of 10/25/2026, 17:13:39 UTC

CVSS 4.0 base score
6.9Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 3.8.7
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-25.

What to do

Affected software

ProductAffectedFixed in
siyuan-notesiyuanAffected
  • <3.8.7
Fixed in
  • 3.8.7
GitHubsiyuan-note/siyuanpkg:github/siyuan-note/siyuanOther threatsAffected
  • <3.8.7
Fixed in
  • 3.8.7

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade SiYuan to version 3.8.7 or later where this vulnerability is fixed. Since the vulnerability is patched in 3.8.7, applying this official fix will remediate the issue.

Description

SiYuan before 3.8.7 contains a path traversal vulnerability in the MCP asset tool because validateAssetUploadPaths relies on an incomplete sensitive-path blacklist that omits .env and other secret files. Authenticated attackers driving the MCP asset upload action can copy such local files into the workspace and read them back via /assets/ over HTTP.

Impact

An authenticated attacker can read sensitive local files, including secret configuration files like .env, by exploiting the path traversal flaw in the asset upload functionality. This can lead to disclosure of sensitive information stored on the host running SiYuan, increasing the risk of further compromise.

References

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