CVE-2026-9791

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-05-28. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
4.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.3Exploit: NoneExposed: 0

A fix is available — apply it.

A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect (OIDC) token with the 'organization' scope. This allows organization metadata to be disclosed in tokens, even after an administrator has explicitly disabled the Organizations feature, potentially leading to incorrect authorization decisions by resource servers.

CVSS v3
4.3
EG Score
4.3(medium)
EPSS
11.9%
KEV
Not listed

Published

May 28, 2026

Last Modified

June 26, 2026

Advisory Details (4)

Auto-updated Jun 17, 2026
Patch available. Sources: redhat.
redhat

2482458 – (CVE-2026-9791) CVE-2026-9791 keycloak-rhel9: Organization Data Leak After Feature Disabled in Keycloak

https://bugzilla.redhat.com/show_bug.cgi?id=2482458
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-9791
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:25098
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:25097

Vendor Advisories for CVE-2026-9791(5)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhbk/keycloak-rhel9-operator:26.4-192026-06-25redhat
redhatrhbk/keycloak-rhel92026-06-25redhat
redhatrhbk/keycloak-rhel9-operator:26.6-62026-06-10redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

Data Freshness Timeline

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-9791?
CVE-2026-9791 is a medium vulnerability published on May 28, 2026. A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect (OIDC) token with the 'organization' scope. This allows organization metadata to be disclosed in…
When was CVE-2026-9791 disclosed?
CVE-2026-9791 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9791 actively exploited?
CVE-2026-9791 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-9791?
CVE-2026-9791 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-9791?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9791, 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.

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