CVE-2025-68948 (GCVE-0-2025-68948)
Vulnerability from cvelistv5 – Published: 2025-12-27 00:21 – Updated: 2025-12-29 16:51
VLAI
EPSS
VEX
Title
SiYuan: Information Disclosure and Authentication Bypass via Hardcoded Session Secret
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-29 16:43 UTC
CWE
- CWE-321 - Use of Hard-coded Cryptographic Key
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/siyuan-note/siyuan/security/ad… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| siyuan-note | siyuan |
Affected:
<= 3.5.1
|
guessed |
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