CVE-2026-16108

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 91% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
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 default-groups REST endpoint and realm representation of Keycloak. This component is responsible for managing groups that are automatically assigned to new users within a realm. The issue allows a delegated administrator with realm-viewing permissions to see the names and identifiers of hidden default groups, even if they lack the specific permissions to view those groups. This can lead to the exposure of sensitive organizational structures or internal group names.

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
9%
KEV
Not listed

Published

July 17, 2026

Last Modified

August 6, 2026

Advisory Details (2)

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

2501740 – (CVE-2026-16108) CVE-2026-16108 keycloak-services: keycloak-services: Realm default-group reads disclose hidden groups under FGAP v2

https://bugzilla.redhat.com/show_bug.cgi?id=2501740
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-16108

Vendor Advisories for CVE-2026-16108(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 / 80× 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 113 total refreshes for this CVE.

  1. 2026-08-30 03:17 UTCEG score recompute
  2. 2026-08-30 03:17 UTCGHSA enrichment
  3. 2026-08-30 01:22 UTCEPSS rescore
  4. 2026-08-28 21:41 UTCEPSS rescore
  5. 2026-08-27 12:13 UTCEG score recompute
  6. 2026-08-27 12:13 UTCGHSA enrichment
  7. 2026-08-26 14:46 UTCEPSS rescore
  8. 2026-08-26 11:55 UTCGHSA enrichment
  9. 2026-08-25 11:35 UTCEG score recompute
  10. 2026-08-25 11:35 UTCGHSA enrichment
  11. 2026-08-24 13:34 UTCEG score recompute
  12. 2026-08-24 13:34 UTCGHSA enrichment
  13. 2026-08-23 15:33 UTCGHSA enrichment
  14. 2026-08-22 17:32 UTCEG score recompute
  15. 2026-08-22 17:32 UTCGHSA enrichment
  16. 2026-08-21 23:49 UTCEPSS rescore
  17. 2026-08-21 19:30 UTCEG score recompute
  18. 2026-08-21 19:30 UTCGHSA enrichment
  19. 2026-08-20 22:55 UTCEPSS rescore
  20. 2026-08-20 21:29 UTCGHSA enrichment
  21. 2026-08-19 23:28 UTCEG score recompute
  22. 2026-08-19 23:28 UTCGHSA enrichment
  23. 2026-08-19 17:03 UTCEPSS rescore
  24. 2026-08-18 19:54 UTCEG score recompute
  25. 2026-08-18 19:54 UTCGHSA enrichment
Show 75 more
  1. 2026-08-18 13:48 UTCEPSS rescore
  2. 2026-08-17 17:16 UTCEG score recompute
  3. 2026-08-17 17:15 UTCGHSA enrichment
  4. 2026-08-17 13:47 UTCEPSS rescore
  5. 2026-08-16 19:14 UTCEG score recompute
  6. 2026-08-16 19:14 UTCGHSA enrichment
  7. 2026-08-16 14:56 UTCEPSS rescore
  8. 2026-08-16 02:14 UTCEPSS rescore
  9. 2026-08-15 20:47 UTCEG score recompute
  10. 2026-08-15 20:47 UTCGHSA enrichment
  11. 2026-08-15 01:30 UTCEPSS rescore
  12. 2026-08-14 22:46 UTCGHSA enrichment
  13. 2026-08-14 00:45 UTCEG score recompute
  14. 2026-08-14 00:45 UTCGHSA enrichment
  15. 2026-08-13 22:00 UTCEPSS rescore
  16. 2026-08-13 02:43 UTCEG score recompute
  17. 2026-08-13 02:43 UTCGHSA enrichment
  18. 2026-08-12 13:50 UTCEPSS rescore
  19. 2026-08-12 04:42 UTCEG score recompute
  20. 2026-08-12 04:42 UTCGHSA enrichment
  21. 2026-08-11 13:42 UTCEPSS rescore
  22. 2026-08-11 06:41 UTCEG score recompute
  23. 2026-08-11 06:41 UTCGHSA enrichment
  24. 2026-08-11 00:00 UTCEPSS rescore
  25. 2026-08-10 08:40 UTCEG score recompute
  26. 2026-08-10 08:40 UTCGHSA enrichment
  27. 2026-08-09 13:46 UTCEPSS rescore
  28. 2026-08-09 10:39 UTCEG score recompute
  29. 2026-08-09 10:39 UTCGHSA enrichment
  30. 2026-08-08 16:37 UTCEPSS rescore
  31. 2026-08-08 12:37 UTCEG score recompute
  32. 2026-08-08 12:37 UTCGHSA enrichment
  33. 2026-08-07 14:35 UTCGHSA enrichment
  34. 2026-08-06 16:34 UTCEG score recompute▲ 2.20
  35. 2026-08-06 16:34 UTCGHSA enrichment
  36. 2026-08-06 16:30 UTCNVD updateCVSS v3 → 6.5
  37. 2026-08-06 13:46 UTCEPSS rescore
  38. 2026-08-06 12:58 UTCEG score recompute
  39. 2026-08-06 12:58 UTCGHSA enrichment
  40. 2026-08-05 19:17 UTCEPSS rescore
  41. 2026-08-05 14:56 UTCGHSA enrichment
  42. 2026-08-04 16:17 UTCEG score recompute
  43. 2026-08-04 16:17 UTCGHSA enrichment
  44. 2026-08-04 15:10 UTCEPSS rescore
  45. 2026-08-04 10:38 UTCEPSS rescore
  46. 2026-08-03 18:15 UTCEG score recompute
  47. 2026-08-03 18:15 UTCGHSA enrichment
  48. 2026-08-03 10:35 UTCEPSS rescore
  49. 2026-08-02 19:35 UTCEG score recompute
  50. 2026-08-02 19:35 UTCGHSA enrichment
  51. 2026-08-02 02:26 UTCEPSS rescore
  52. 2026-08-01 21:34 UTCEG score recompute
  53. 2026-08-01 21:34 UTCGHSA enrichment
  54. 2026-08-01 04:15 UTCEPSS rescore
  55. 2026-07-31 23:33 UTCGHSA enrichment
  56. 2026-07-31 01:30 UTCEG score recompute
  57. 2026-07-31 01:29 UTCGHSA enrichment
  58. 2026-07-30 03:26 UTCEG score recompute
  59. 2026-07-30 03:26 UTCGHSA enrichment
  60. 2026-07-30 01:30 UTCEPSS rescore
  61. 2026-07-29 05:23 UTCEG score recompute
  62. 2026-07-29 05:23 UTCGHSA enrichment
  63. 2026-07-28 07:22 UTCEG score recompute
  64. 2026-07-28 07:22 UTCGHSA enrichment
  65. 2026-07-27 14:13 UTCEPSS rescore
  66. 2026-07-27 09:19 UTCEG score recompute
  67. 2026-07-27 09:19 UTCGHSA enrichment
  68. 2026-07-26 14:54 UTCEPSS rescore
  69. 2026-07-26 14:54 UTCEPSS rescore
  70. 2026-07-26 11:18 UTCEG score recompute
  71. 2026-07-26 11:18 UTCGHSA enrichment
  72. 2026-07-25 14:17 UTCEPSS rescore
  73. 2026-07-24 14:17 UTCEPSS rescore
  74. 2026-07-23 14:18 UTCEPSS rescore
  75. 2026-07-23 03:05 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-16108?
CVE-2026-16108 is a medium vulnerability published on July 17, 2026. A flaw was found in the default-groups REST endpoint and realm representation of Keycloak. This component is responsible for managing groups that are automatically assigned to new users within a realm. The issue allows a delegated administrator with realm-viewing permissions to see the names and…
When was CVE-2026-16108 disclosed?
CVE-2026-16108 was first published in the National Vulnerability Database on July 17, 2026, with the most recent update on August 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16108 actively exploited?
CVE-2026-16108 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 90.9% of all scored CVEs.
What is the CVSS score of CVE-2026-16108?
CVE-2026-16108 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-16108?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16108, 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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