CVE-2026-56327

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-07-01. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.3Exploit: None knownExposed services: Not assessed

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

Capgo before 12.128.2 contains an information disclosure vulnerability in the public.invite_user_to_org RPC function that allows unauthenticated attackers to enumerate organization existence by observing distinct error responses. Attackers can call the SECURITY DEFINER function with a publishable API key to determine if an organization ID exists based on NO_ORG versus NO_RIGHTS responses, enabling tenant enumeration attacks.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
28
EG Risk 28/100

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
Severity53% × 45%
Exploitation0% × 40%
Automatability30% × 15%
EPSS PROB
0.4%
EPSS %ILE
27th
KEV
Not listed

Published

July 1, 2026

Last Modified

July 1, 2026

Advisory Details (2)

Auto-updated Jul 3, 2026
🔬 Proof of concept available. No fix on record yet. Sources: github.
githubMentions a patch (unverified)🟡 PoC Available

Unauthenticated org existence oracle via public Supabase RPC public.invite_user_to_org(email, org_id, invite_type) (SECURITY DEFINER) · Advisory · Cap-go/capgo · GitHub

https://github.com/Cap-go/capgo/security/advisories/GHSA-35q8-ghfg-vp6m
generic

Capgo - Unauthenticated Organization Existence Oracle via public.invite_user_to_org RPC | Advisories | VulnCheck

https://www.vulncheck.com/advisories/capgo-unauthenticated-organization-existence-oracle-via-public-invite-user-to-org-rpc

Vendor Advisories for CVE-2026-56327(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 7× in last 7d / 33× 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 190 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-56327?
CVE-2026-56327 is a medium vulnerability published on July 1, 2026. Capgo before 12.128.2 contains an information disclosure vulnerability in the public.inviteusertoorg RPC function that allows unauthenticated attackers to enumerate organization existence by observing distinct error responses. Attackers can call the SECURITY DEFINER function with a publishable API…
When was CVE-2026-56327 disclosed?
CVE-2026-56327 was first published on July 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56327 actively exploited?
CVE-2026-56327 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-56327?
CVE-2026-56327 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-56327?
No fix for CVE-2026-56327 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-56327 are linked in the Vendor Advisories panel on this page.

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