CVE-2025-68948
Severity CVSS v4.0:
MEDIUM
Type:
CWE-321
Use of Hard-coded Cryptographic Key
Publication date:
27/12/2025
Last modified:
27/12/2025
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.
Impact
Base Score 4.0
6.90
Severity 4.0
MEDIUM