CVE-2026-116166

SiYuan 3.6.0 before 3.8.7 accepts and persists the networkServeTLS setting but never enforces it, so the kernel port keeps serving full API access over plain HTTP alongside HTTPS. Network-adjacent attackers can sniff the cleartext login flow and session cookie, which lacks the Secure attribute while responses omit HSTS, to hijack kernel API sessions.

CVSS v3 6.8 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 5.2

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hpj5-f7cj-vvwr
https://www.vulncheck.com/advisories/siyuan-3.6.0-before-3.8.7-cleartext-transmission-via-unenforced-networkservetls-setting
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hpj5-f7cj-vvwr

Configurations

No configuration.

History

29 Oct 2026, 17:18

Type	Values Removed	Values Added
References	~~() https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hpj5-f7cj-vvwr -~~	() https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hpj5-f7cj-vvwr -

25 Oct 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-25 14:16

Updated : 2026-10-29 17:18

NVD link : CVE-2026-116166

Mitre link : CVE-2026-116166

CVE.ORG link : CVE-2026-116166

JSON object : View

Products Affected

No product.

CWE

CWE-319

Cleartext Transmission of Sensitive Information

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