CVE-2026-70618

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-08-05. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
EG Score
4.3(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity43% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
9%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 6, 2026

Advisory Details (3)

Auto-updated Aug 5, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
generic

Spacebar Server Missing Authorization via member-ids Endpoint | Advisories | VulnCheck

https://www.vulncheck.com/advisories/spacebar-server-missing-authorization-via-member-ids-endpoint
github_commit

commit 51da17cf19d4 (spacebarchat/server)

Fix landed in spacebarchat/server commit 51da17cf19d4 — awaiting tagged release

https://github.com/spacebarchat/server/commit/51da17cf19d476483ee44e5f832d1ebdcd844f88
github Patch Available🟡 PoC Available

Missing authorization on GET /guilds/{guild_id}/roles/{role_id}/member-ids allows any user to enumerate guild membership · Advisory · spacebarchat/server · GitHub

https://github.com/spacebarchat/server/security/advisories/GHSA-p5cf-7hg9-gf65

Vendor Advisories for CVE-2026-70618(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 23× in last 7d / 49× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 20:13 UTCGHSA enrichment
  3. 2026-08-19 21:27 UTCEG score recompute
  4. 2026-08-19 21:27 UTCGHSA enrichment
  5. 2026-08-19 17:04 UTCEPSS rescore
  6. 2026-08-18 22:27 UTCEG score recompute
  7. 2026-08-18 22:27 UTCGHSA enrichment
  8. 2026-08-18 13:49 UTCEPSS rescore
  9. 2026-08-18 13:49 UTCEPSS rescore
  10. 2026-08-17 23:41 UTCEG score recompute
  11. 2026-08-17 23:41 UTCGHSA enrichment
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-17 00:55 UTCEG score recompute
  14. 2026-08-17 00:55 UTCGHSA enrichment
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 02:15 UTCEPSS rescore
  18. 2026-08-16 02:08 UTCGHSA enrichment
  19. 2026-08-15 03:23 UTCEG score recompute
  20. 2026-08-15 03:23 UTCGHSA enrichment
  21. 2026-08-15 01:31 UTCEPSS rescore
  22. 2026-08-14 04:36 UTCEG score recompute
  23. 2026-08-14 04:36 UTCGHSA enrichment
  24. 2026-08-13 22:00 UTCEPSS rescore
  25. 2026-08-13 05:51 UTCEG score recompute
Show 24 more
  1. 2026-08-13 05:51 UTCGHSA enrichment
  2. 2026-08-12 13:51 UTCEPSS rescore
  3. 2026-08-12 07:04 UTCEG score recompute
  4. 2026-08-12 07:04 UTCGHSA enrichment
  5. 2026-08-11 08:18 UTCEG score recompute
  6. 2026-08-11 08:18 UTCGHSA enrichment
  7. 2026-08-11 00:00 UTCEPSS rescore
  8. 2026-08-10 09:32 UTCEG score recompute
  9. 2026-08-10 09:32 UTCGHSA enrichment
  10. 2026-08-09 13:47 UTCEPSS rescore
  11. 2026-08-09 10:46 UTCEG score recompute
  12. 2026-08-09 10:46 UTCGHSA enrichment
  13. 2026-08-08 16:37 UTCEPSS rescore
  14. 2026-08-08 12:00 UTCEG score recompute
  15. 2026-08-08 12:00 UTCGHSA enrichment
  16. 2026-08-07 13:14 UTCGHSA enrichment
  17. 2026-08-06 14:28 UTCEG score recompute
  18. 2026-08-06 14:28 UTCGHSA enrichment
  19. 2026-08-06 13:54 UTCEG score recompute
  20. 2026-08-06 13:54 UTCGHSA enrichment
  21. 2026-08-06 13:47 UTCEPSS rescore
  22. 2026-08-05 20:32 UTCEG score recompute
  23. 2026-08-05 20:15 UTCEG score recompute
  24. 2026-08-05 20:15 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-70618?
CVE-2026-70618 is a medium vulnerability published on August 5, 2026. 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/{guildid}/roles/{roleid}/member-ids endpoint without guild membership verification. Attackers can exploit the…
When was CVE-2026-70618 disclosed?
CVE-2026-70618 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-70618 actively exploited?
CVE-2026-70618 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 90.7% of all scored CVEs.
What is the CVSS score of CVE-2026-70618?
CVE-2026-70618 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-70618?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-70618, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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