CVE-2025-68948
MEDIUM EPSS 9.7%
Published Dec 27, 20256mo ago · Modified Jun 17, 20262w ago
6.9 CVSS 4.0
Published Dec 27, 2025 6mo ago
Last Modified Jun 17, 2026 2w ago
Description
SiYuan is self-hosted, open source personal knowledge management software. In versions 3.5.1 and prior, the SiYuan Note application utilizes a hardcoded cryptographic secret for its session store. This unsafe practice renders the session encryption ineffective. Since the sensitive AccessAuthCode is stored within the session cookie, an attacker who intercepts or obtains a user's encrypted session cookie (e.g., via session hijacking) can locally decrypt it using the public key. Once decrypted, the attacker can retrieve the AccessAuthCode in plain text and use it to authenticate or take over the session.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/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 Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
9.7% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available
Weaknesses 2
CWE-321
CWE-798 Use of Hard-coded Credentials Authentication
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| b3log | siyuan | * | <3.5.2 |
References 1
- github.com https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f7ph-rc3w-qp28
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.