CVE-2026-70618Spacebar Server Missing Authorization via member-ids Endpoint
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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
- 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- Weakness (CWE)
- CWE-862
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Aug 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Spacebar Server Spacebar Server spacebar_server:spacebar_server (from the name) | through 51da17cf19d476483ee44e5f832d1ebdcd844f88 | CNA record |
References
- https://github.com/spacebarchat/server/security/advisories/GHSA-p5cf-7hg9-gf65vendor-advisory
- https://github.com/spacebarchat/server/commit/51da17cf19d476483ee44e5f832d1ebdcd844f88patch
- https://www.vulncheck.com/advisories/spacebar-server-missing-authorization-via-member-ids-endpointthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.