CVE-2026-70618Public exploitNetwork attack vector

Authenticated member-ID disclosure via unchecked role endpoint

Published Aug 5, 2026 · Updated Aug 5, 2026

Missing authorization in Spacebar Server before commit 51da17c allows remote authenticated users to enumerate guild member IDs. The GET /guilds/{guild_id}/roles/{role_id}/member-ids handler queries supplied guild and role identifiers and returns member IDs without invoking the guild-membership check used by sibling routes. Any valid bearer token and a known guild ID are sufficient; disclosure is limited to member user IDs, not messages or profile data.

CVSS severity5.3
Medium
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Spacebar Server before commit 51da17c allows remote authenticated users to enumerate guild member IDs. The GET /guilds/{guild_id}/roles/{role_id}/member-ids handler queries supplied guild and role identifiers and returns member IDs without invoking the guild-membership check used by sibling routes. Any valid bearer token and a known guild ID are sufficient; disclosure is limited to member user IDs, not messages or profile data.

The record

CVE
CVE-2026-70618
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Spacebar
Product
Spacebar Server
Classifications
CWE-862, T1087
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=51da17cf19d476483ee44e5f832d1ebdcd844f88

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Spacebar · Spacebar Serverversion=0 <=51da17cf19d476483ee44e5f832d1ebdcd844f88

Published CVSS scores

5.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
4.3GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1087Account Discovery

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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