{"id":"CVE-2026-44830","summary":"Empty API_TOKEN disables authentication on network-reachable HTTP/SSE transport","details":"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.","aliases":["GHSA-crr4-xrj9-ww8g"],"modified":"2026-07-15T01:49:18.920367465Z","published":"2026-05-27T14:19:55.126Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44830.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-306"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44830.json"},{"type":"ADVISORY","url":"https://github.com/Dataojitori/nocturne_memory/security/advisories/GHSA-crr4-xrj9-ww8g"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44830"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/dataojitori/nocturne_memory","events":[{"introduced":"0"},{"fixed":"ce6465e74902e5d8fd7ba339a498ce9d8e5527f1"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.4.1"}],"source":"AFFECTED_FIELD"}}],"versions":["2.4.0","2.3.0","2.2.0","2.1.1","2.0.1","2.0.0","1.3.2","1.3.1","1.3.0","v1.2.0","v1.1.4","v1.1.3","v1.1.2","v1.1.1","v1.1.0","v1.0.4","v1.0.3","v1.0.2","v1.0.1","v1.0.0","v0.9.0-legacy"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44830.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}