{"id":"CVE-2026-70618","summary":"Spacebar Server Missing Authorization via member-ids Endpoint","details":"Spacebar Server before commit 51da17c contains a missing authorization vulnerability that allows any authenticated user to enumerate complete guild membership by querying the GET /guilds/{guild_id}/roles/{role_id}/member-ids endpoint without guild membership verification. Attackers can exploit the unprotected route handler in the roles member-ids endpoint, which lacks permission checks present in sibling endpoints, to retrieve the full list of member user IDs for any guild on the instance using only a valid bearer token and a known guild ID.","aliases":["GHSA-p5cf-7hg9-gf65"],"modified":"2026-08-08T03:30:26.547265201Z","published":"2026-08-05T19:57:35.007Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-862"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70618.json","unresolved_ranges":[{"extracted_events":[{"last_affected":"51da17cf19d476483ee44e5f832d1ebdcd844f88"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70618.json"},{"type":"ADVISORY","url":"https://github.com/spacebarchat/server/security/advisories/GHSA-p5cf-7hg9-gf65"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70618"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/spacebar-server-missing-authorization-via-member-ids-endpoint"},{"type":"FIX","url":"https://github.com/spacebarchat/server/commit/51da17cf19d476483ee44e5f832d1ebdcd844f88"},{"type":"PACKAGE","url":"https://github.com/spacebarchat/server"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/spacebarchat/server","events":[{"introduced":"0"},{"fixed":"51da17cf19d476483ee44e5f832d1ebdcd844f88"}],"database_specific":{"source":"REFERENCES"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70618.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"}]}