Empty API_TOKEN disables authentication on network-reachable HTTP/SSE transport
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
Nocturne Memory is a lightweight, rollbackable, and visual Long-Term Memory Server for MCP Agents. Prior to 2.4.1, when API_TOKEN is unset or empty, the BearerTokenAuthMiddleware bypasses authentication for all HTTP requests. Combined with the default 0.0.0.0 host binding and CORS allow_origins=["*"], operators following the Docker setup without explicitly setting API_TOKEN expose the full Knowledge-Graph read/write API to any LAN-reachable client. An attacker on the same network can read, write, or delete all memory entries — including system://boot and core://* URIs that auto-load into downstream agent sessions, enabling persistent prompt-injection. This vulnerability is fixed in 2.4.1.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Dataojitori | nocturne_memory | before 2.4.1 | 2.4.1 | Patch available | CNA |
- nocturne_memory VendorDataojitori Affected before 2.4.1 Fixed in 2.4.1 Patch available CNA
Remediation
- Fix · CNA nocturne_memory (Dataojitori) Fixed in 2.4.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-44830
- 2026-10-25 Priority changed: MEDIUM → LOW
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences