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.
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History
Wed, 05 Aug 2026 20:15:00 +0000
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| Description | 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. | |
| Title | Spacebar Server Missing Authorization via member-ids Endpoint | |
| Weaknesses | CWE-862 | |
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cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-08-05T19:57:35.007Z
Reserved: 2026-08-04T20:17:18.296Z
Link: CVE-2026-70618
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
Updated: 2026-08-05T21:45:04Z