Dashboard / CVE-2026-116166

CVE-2026-116166

HIGH
MEDIUM Priority: 0.01 BB Relevance: 50/100
Published: 2026-10-25 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Adjacent No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Adjacent
AC: High
PR: None
UI: None
S: X
AT: Present
VC: High
VI: High
VA: None

Description

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
siyuan-note siyuan 3.6.0 < 3.8.7

References & Advisories (2)

Bug Bounty Relevance

50 / 100
✓ No authentication
✓ No user interaction

CVSS Score

7.6 / 10.0 v4.0
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.11%
Raw Score 0.001150
Percentile 1.6%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00115
2026-10-28
0.00115

Intelligence Sources

mitre ref →
nvd ref →

External Links