CVE-2026-56215

HIGHPre-NVD 8.38.3—
EchelonGraph scoreHIGH confidence

Score 8.3 from GitHub Security Advisory (severity: HIGH) published 2026-06-20. a secondary CVSS source baseline 8.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.3Exploit: NoneExposed: 0

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

Capgo before 12.128.12 allows authenticated users to modify their mutable public.users.email to arbitrary addresses, which the SSO provisioning endpoint trusts as an account-merge key. Attackers can pre-position their account with a victim's corporate SSO email, causing the provision-user endpoint to merge the victim's SSO identity into the attacker-controlled account.

CVSS v3
8.3
EG Score
8.3(high)
EPSS
13.5%
KEV
Not listed

Published

June 20, 2026

Last Modified

June 24, 2026

Advisory Details (2)

Auto-updated Jun 22, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Capgo - Account Merge via Poisoned public.users.email in SSO Provisioning | Advisories | VulnCheck

https://www.vulncheck.com/advisories/capgo-account-merge-via-poisoned-public-users-email-in-sso-provisioning
github Patch Available🟡 PoC Available

User-controlled public.users.email can poison SSO account merge and attach victim SSO identity to attacker account · Advisory · Cap-go/capgo · GitHub

https://github.com/Cap-go/capgo/security/advisories/GHSA-wqc6-fhwf-qpww

Vendor Advisories for CVE-2026-56215(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 36× in last 7d / 89× 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. 2026-07-06 20:38 UTCEG score recompute
  2. 2026-07-06 20:38 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 08:26 UTCEG score recompute
  6. 2026-07-06 08:26 UTCGHSA enrichment
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-05 20:14 UTCEG score recompute
  10. 2026-07-05 20:14 UTCGHSA enrichment
  11. 2026-07-05 08:07 UTCEG score recompute
  12. 2026-07-05 08:07 UTCGHSA enrichment
  13. 2026-07-05 02:31 UTCEPSS rescore
  14. 2026-07-05 02:30 UTCEPSS rescore
  15. 2026-07-04 19:55 UTCEG score recompute
  16. 2026-07-04 19:55 UTCGHSA enrichment
  17. 2026-07-04 07:49 UTCEG score recompute
  18. 2026-07-04 07:49 UTCGHSA enrichment
  19. 2026-07-04 06:31 UTCEPSS rescore
  20. 2026-07-04 06:31 UTCEPSS rescore
  21. 2026-07-03 19:38 UTCEG score recompute
  22. 2026-07-03 19:38 UTCGHSA enrichment
  23. 2026-07-03 07:32 UTCEG score recompute
  24. 2026-07-03 07:31 UTCGHSA enrichment
  25. 2026-07-02 19:24 UTCEG score recompute
Show 64 more
  1. 2026-07-02 19:24 UTCGHSA enrichment
  2. 2026-07-02 07:17 UTCEG score recompute
  3. 2026-07-02 07:17 UTCGHSA enrichment
  4. 2026-07-01 19:10 UTCEG score recompute
  5. 2026-07-01 19:10 UTCGHSA enrichment
  6. 2026-07-01 15:07 UTCEPSS rescore
  7. 2026-07-01 07:03 UTCEG score recompute
  8. 2026-07-01 07:03 UTCGHSA enrichment
  9. 2026-06-30 23:22 UTCEPSS rescore
  10. 2026-06-30 18:55 UTCEG score recompute
  11. 2026-06-30 18:55 UTCGHSA enrichment
  12. 2026-06-30 06:48 UTCEG score recompute
  13. 2026-06-30 06:48 UTCGHSA enrichment
  14. 2026-06-29 18:39 UTCEG score recompute
  15. 2026-06-29 18:39 UTCGHSA enrichment
  16. 2026-06-29 14:06 UTCEPSS rescore
  17. 2026-06-29 14:06 UTCEPSS rescore
  18. 2026-06-29 06:32 UTCEG score recompute
  19. 2026-06-29 06:31 UTCGHSA enrichment
  20. 2026-06-28 18:22 UTCEG score recompute
  21. 2026-06-28 18:22 UTCGHSA enrichment
  22. 2026-06-28 14:07 UTCEPSS rescore
  23. 2026-06-28 06:15 UTCEG score recompute
  24. 2026-06-28 06:15 UTCGHSA enrichment
  25. 2026-06-28 04:56 UTCEPSS rescore
  26. 2026-06-28 04:56 UTCEPSS rescore
  27. 2026-06-27 18:07 UTCEG score recompute
  28. 2026-06-27 18:07 UTCGHSA enrichment
  29. 2026-06-27 06:00 UTCEG score recompute
  30. 2026-06-27 06:00 UTCGHSA enrichment
  31. 2026-06-27 03:08 UTCEPSS rescore
  32. 2026-06-26 17:53 UTCEG score recompute
  33. 2026-06-26 17:53 UTCGHSA enrichment
  34. 2026-06-26 05:45 UTCEG score recompute
  35. 2026-06-26 05:45 UTCGHSA enrichment
  36. 2026-06-25 17:38 UTCEG score recompute
  37. 2026-06-25 17:38 UTCGHSA enrichment
  38. 2026-06-25 13:49 UTCEPSS rescore
  39. 2026-06-25 05:31 UTCEG score recompute
  40. 2026-06-25 05:31 UTCGHSA enrichment
  41. 2026-06-24 17:18 UTCEG score recompute
  42. 2026-06-24 17:18 UTCGHSA enrichment
  43. 2026-06-24 14:05 UTCEPSS rescore
  44. 2026-06-24 05:08 UTCEG score recompute
  45. 2026-06-24 05:07 UTCGHSA enrichment
  46. 2026-06-23 21:33 UTCEPSS rescore
  47. 2026-06-23 21:33 UTCEPSS rescore
  48. 2026-06-23 16:59 UTCEG score recompute
  49. 2026-06-23 16:58 UTCGHSA enrichment
  50. 2026-06-23 04:49 UTCEG score recompute
  51. 2026-06-23 04:49 UTCGHSA enrichment
  52. 2026-06-22 19:38 UTCNVD updateCVSS v4 → 8.7
  53. 2026-06-22 16:32 UTCEG score recompute
  54. 2026-06-22 16:31 UTCGHSA enrichment
  55. 2026-06-22 04:22 UTCEG score recompute
  56. 2026-06-22 04:22 UTCGHSA enrichment
  57. 2026-06-21 16:14 UTCEG score recompute
  58. 2026-06-21 16:13 UTCGHSA enrichment
  59. 2026-06-21 04:05 UTCEG score recompute
  60. 2026-06-21 04:05 UTCGHSA enrichment
  61. 2026-06-20 15:54 UTCEG score recompute
  62. 2026-06-20 15:54 UTCGHSA enrichment
  63. 2026-06-20 03:45 UTCEG score recompute
  64. 2026-06-20 03:45 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56215?
CVE-2026-56215 is a high vulnerability published on June 20, 2026. Capgo before 12.128.12 allows authenticated users to modify their mutable public.users.email to arbitrary addresses, which the SSO provisioning endpoint trusts as an account-merge key. Attackers can pre-position their account with a victim's corporate SSO email, causing the provision-user endpoint…
When was CVE-2026-56215 disclosed?
CVE-2026-56215 was first published in the National Vulnerability Database on June 20, 2026, with the most recent update on June 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56215 actively exploited?
CVE-2026-56215 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-56215?
CVE-2026-56215 has a CVSS v3 base score of 8.3 (NVD).
How do I remediate CVE-2026-56215?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56215, 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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