CVE-2026-70618

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM 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: 0.3%CVSS: 4.3Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

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
4.3MEDIUMmedium confidence
EG Risk
35
EG Risk 35/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
23rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 5, 2026

Last Modified

September 16, 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 13× in last 7d / 67× 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.

Showing the most recent 100 of 154 total refreshes for this CVE.

  1. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 05:57 UTCEG score recompute
  3. 2026-10-04 05:57 UTCGHSA enrichment
  4. 2026-10-03 14:26 UTCEPSS rescore
  5. 2026-10-02 17:56 UTCEPSS rescore
  6. 2026-10-02 09:51 UTCEG score recompute
  7. 2026-10-02 09:51 UTCGHSA enrichment
  8. 2026-10-01 19:50 UTCEPSS rescore
  9. 2026-10-01 02:14 UTCEG score recompute
  10. 2026-10-01 02:14 UTCGHSA enrichment
  11. 2026-09-30 15:03 UTCEPSS rescore
  12. 2026-09-29 06:12 UTCEG score recompute
  13. 2026-09-29 06:12 UTCGHSA enrichment
  14. 2026-09-28 13:52 UTCEPSS rescore
  15. 2026-09-27 17:38 UTCEG score recompute
  16. 2026-09-27 17:38 UTCGHSA enrichment
  17. 2026-09-27 13:48 UTCEPSS rescore
  18. 2026-09-26 15:59 UTCEPSS rescore
  19. 2026-09-25 09:00 UTCEG score recompute
  20. 2026-09-25 09:00 UTCGHSA enrichment
  21. 2026-09-24 09:38 UTCEG score recompute
  22. 2026-09-24 09:38 UTCGHSA enrichment
  23. 2026-09-23 17:54 UTCEPSS rescore
  24. 2026-09-23 10:52 UTCEG score recompute
  25. 2026-09-23 10:52 UTCGHSA enrichment
Show 75 more
  1. 2026-09-22 11:55 UTCEG score recompute
  2. 2026-09-22 11:55 UTCGHSA enrichment
  3. 2026-09-21 21:09 UTCEPSS rescore
  4. 2026-09-21 13:05 UTCEG score recompute
  5. 2026-09-21 13:05 UTCGHSA enrichment
  6. 2026-09-20 20:16 UTCEPSS rescore
  7. 2026-09-19 23:14 UTCEG score recompute
  8. 2026-09-19 23:14 UTCGHSA enrichment
  9. 2026-09-18 23:54 UTCEG score recompute
  10. 2026-09-18 23:53 UTCGHSA enrichment
  11. 2026-09-18 19:28 UTCEPSS rescore
  12. 2026-09-18 01:05 UTCEG score recompute
  13. 2026-09-18 01:05 UTCGHSA enrichment
  14. 2026-09-16 21:11 UTCEG score recompute
  15. 2026-09-16 21:11 UTCGHSA enrichment
  16. 2026-09-16 14:08 UTCEPSS rescore
  17. 2026-09-16 05:15 UTCEPSS rescore
  18. 2026-09-16 03:10 UTCEG score recompute
  19. 2026-09-16 03:10 UTCGHSA enrichment
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-15 01:21 UTCGHSA enrichment
  22. 2026-09-14 00:36 UTCEG score recompute
  23. 2026-09-14 00:36 UTCGHSA enrichment
  24. 2026-09-13 01:51 UTCEG score recompute
  25. 2026-09-13 01:51 UTCGHSA enrichment
  26. 2026-09-12 15:02 UTCEPSS rescore
  27. 2026-09-12 03:05 UTCEG score recompute
  28. 2026-09-12 03:05 UTCGHSA enrichment
  29. 2026-09-11 14:53 UTCEPSS rescore
  30. 2026-09-11 04:18 UTCEG score recompute
  31. 2026-09-11 04:18 UTCGHSA enrichment
  32. 2026-09-10 09:35 UTCEPSS rescore
  33. 2026-09-10 05:32 UTCGHSA enrichment
  34. 2026-09-09 06:18 UTCEG score recompute
  35. 2026-09-09 06:18 UTCGHSA enrichment
  36. 2026-09-08 22:01 UTCEPSS rescore
  37. 2026-09-07 18:11 UTCEG score recompute
  38. 2026-09-07 18:11 UTCGHSA enrichment
  39. 2026-09-07 16:01 UTCEPSS rescore
  40. 2026-09-06 13:47 UTCEPSS rescore
  41. 2026-09-06 06:58 UTCEG score recompute
  42. 2026-09-06 06:58 UTCGHSA enrichment
  43. 2026-09-05 15:31 UTCEPSS rescore
  44. 2026-09-05 08:12 UTCEG score recompute
  45. 2026-09-05 08:12 UTCGHSA enrichment
  46. 2026-09-04 09:26 UTCEG score recompute
  47. 2026-09-04 09:26 UTCGHSA enrichment
  48. 2026-09-04 05:07 UTCEPSS rescore
  49. 2026-09-03 06:38 UTCEG score recompute
  50. 2026-09-03 06:38 UTCGHSA enrichment
  51. 2026-09-02 14:12 UTCEPSS rescore
  52. 2026-09-01 22:06 UTCEG score recompute
  53. 2026-09-01 22:05 UTCGHSA enrichment
  54. 2026-09-01 13:54 UTCEPSS rescore
  55. 2026-09-01 04:40 UTCEPSS rescore
  56. 2026-08-31 22:45 UTCGHSA enrichment
  57. 2026-08-30 20:05 UTCEG score recompute
  58. 2026-08-30 20:05 UTCGHSA enrichment
  59. 2026-08-30 19:17 UTCEPSS rescore
  60. 2026-08-30 01:22 UTCEPSS rescore
  61. 2026-08-29 21:19 UTCEG score recompute
  62. 2026-08-29 21:19 UTCGHSA enrichment
  63. 2026-08-28 21:42 UTCEPSS rescore
  64. 2026-08-28 12:13 UTCEG score recompute
  65. 2026-08-28 12:12 UTCGHSA enrichment
  66. 2026-08-27 12:15 UTCEG score recompute
  67. 2026-08-27 12:15 UTCGHSA enrichment
  68. 2026-08-26 14:47 UTCEPSS rescore
  69. 2026-08-26 13:29 UTCGHSA enrichment
  70. 2026-08-25 14:18 UTCGHSA enrichment
  71. 2026-08-24 15:19 UTCEG score recompute
  72. 2026-08-24 15:19 UTCGHSA enrichment
  73. 2026-08-23 16:32 UTCEG score recompute
  74. 2026-08-23 16:32 UTCGHSA enrichment
  75. 2026-08-23 00:19 UTCEPSS rescore

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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 on August 5, 2026, with the most recent update on September 16, 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 0.3% probability of exploitation in the next 30 days (23rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-70618?
CVE-2026-70618 has a CVSS base score of 4.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-70618?
A fix for CVE-2026-70618 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-70618 are linked in the Vendor Advisories panel on this page.

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