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
Trending — 3 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 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)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
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.

Affected Packages

(2 across 1 ecosystem)
Maven(2)
PackageVulnerable rangeFixed inDependents
org.keycloak:keycloak-server-spi-private10.0.0 ... 9.0.3 (156 versions)26.6.3—
org.keycloak:keycloak-services1.0-alpha-1 ... 9.0.3 (216 versions)26.6.3—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 34× 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 199 total refreshes for this CVE.

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

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 0% probability of exploitation in the next 30 days, which ranks it in the top 87.8% of all scored CVEs.
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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-9791

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