CVE-2026-9796

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-05-28. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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

A fix is available — apply it.

A flaw was found in Keycloak. An authenticated administrator with the manage-clients role can exploit a Time-of-check to time-of-use (TOCTOU) vulnerability in the name-based admin role checks. This allows the attacker to escalate their privileges to realm-admin for all users within the realm, granting them extensive control over the system. The composite role relationship persists even after the attacker's own permissions are revoked and across system reboots.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

May 28, 2026

Last Modified

August 19, 2026

Advisory Details (2)

Auto-updated Jun 13, 2026
Patch available. Sources: redhat.
redhat

2482464 – (CVE-2026-9796) CVE-2026-9796 keycloak: Keycloak: Privilege escalation via Time-of-Check to Time-of-Use (TOCTOU) vulnerability

https://bugzilla.redhat.com/show_bug.cgi?id=2482464
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-9796

Vendor Advisories for CVE-2026-9796(3)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhbk/keycloak-rhel9-operator:26.6-122026-08-18redhat
redhatrhbk-keycloak-rhel9/rhbk-keycloak-rhel92026-08-18redhat

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

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
org.keycloak:keycloak-server1.0-alpha-1-12062013 ... 1.2.0.Beta1 (14 versions)26.6.4—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 52× 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 155 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-9796?
CVE-2026-9796 is a medium vulnerability published on May 28, 2026. A flaw was found in Keycloak. An authenticated administrator with the manage-clients role can exploit a Time-of-check to time-of-use (TOCTOU) vulnerability in the name-based admin role checks. This allows the attacker to escalate their privileges to realm-admin for all users within the realm,…
When was CVE-2026-9796 disclosed?
CVE-2026-9796 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9796 actively exploited?
CVE-2026-9796 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 87.7% of all scored CVEs.
What is the CVSS score of CVE-2026-9796?
CVE-2026-9796 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-9796?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9796, 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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