CVE-2026-70618

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.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/spacebarchat/server/commit/51da17cf19d476483ee44e5f832d1ebdcd844f88
https://github.com/spacebarchat/server/security/advisories/GHSA-p5cf-7hg9-gf65
https://www.vulncheck.com/advisories/spacebar-server-missing-authorization-via-member-ids-endpoint
https://github.com/spacebarchat/server/security/advisories/GHSA-p5cf-7hg9-gf65

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-05 20:17

Updated : 2026-09-16 20:34

NVD link : CVE-2026-70618

Mitre link : CVE-2026-70618

CVE.ORG link : CVE-2026-70618

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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