CVE-2026-12388

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-06-30. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

A flaw was found in the Identity Provider (IdP) mapper component of Keycloak, which is used to manage how user information from external services is mapped to Keycloak users. An administrator with limited permissions to manage identity providers can exploit this flaw by creating a "Hardcoded Role" mapper that assigns high-level administrative roles (like realm-admin) to themselves or others. This allows a restricted administrator to bypass security checks and gain full control over the entire realm.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
34%
KEV
Not listed

Published

June 30, 2026

Last Modified

July 1, 2026

Advisory Details (2)

Auto-updated Jun 30, 2026
Patch available. Sources: redhat.
redhat

2489140 – (CVE-2026-12388) CVE-2026-12388 keycloak-broker: Keycloak: Privilege escalation to realm administrator via improper authorization in identity provider mapper

https://bugzilla.redhat.com/show_bug.cgi?id=2489140
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-12388

Vendor Advisories for CVE-2026-12388(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 / 70× 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 124 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-12388?
CVE-2026-12388 is a medium vulnerability published on June 30, 2026. A flaw was found in the Identity Provider (IdP) mapper component of Keycloak, which is used to manage how user information from external services is mapped to Keycloak users. An administrator with limited permissions to manage identity providers can exploit this flaw by creating a "Hardcoded Role"…
When was CVE-2026-12388 disclosed?
CVE-2026-12388 was first published in the National Vulnerability Database on June 30, 2026, with the most recent update 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-2026-12388 actively exploited?
CVE-2026-12388 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 66.5% of all scored CVEs.
What is the CVSS score of CVE-2026-12388?
CVE-2026-12388 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-12388?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12388, 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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