CVE-2025-68948 — SiYuan: Information Disclosure and Authentication Bypass via Hardcoded Session Secret
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…
Published: 2025-12-27 · CVSS: 6.9 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7