Description
SiYuan before v3.8.4 contains an authentication bypass vulnerability in the publish service where session cookies are issued without Secure or SameSite attributes over plaintext HTTP connections. An on-path attacker can observe a valid publish-visitor-session-id cookie from a Basic Auth exchange and replay it to access authenticated publish endpoints without knowing the account password.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| siyuan-note | siyuan | < 3.8.4 | 3.8.4 |
References
- GitHub Security Advisory (GHSA-7j37-4gq6-wm7m) vendor-advisory
- Patch Commit patch
- Patch Commit patch
- VulnCheck Advisory: SiYuan before v3.8.4 Authentication Bypass via Plaintext Session Cookie third-party-advisory