Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| B3Log | Siyuan | < 3.5.2 |
Related Weaknesses (CWE)
References
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f7ph-rc3w-qp28ExploitVendor Advisory
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-f7ph-rc3w-qp28ExploitVendor Advisory
FAQ
What is CVE-2025-68948?
CVE-2025-68948 is a vulnerability with a CVSS score of 8.1 (HIGH). 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. Thi...
How severe is CVE-2025-68948?
CVE-2025-68948 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-68948?
Check the references section above for vendor advisories and patch information. Affected products include: B3Log Siyuan.