CVE-2026-16102

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in the Dynamic Client Registration (DCR) component of Keycloak, an identity and access management solution. The default DCR policy fails to properly validate the claim path for User Property mappers, allowing them to write values to sensitive internal claim locations. An attacker with a standard user account and a limited Initial Access Token can exploit this to forge administrative roles in their access token. This allows the attacker to take over other clients, steal confidential secrets, and potentially gain full administrative control over the realm.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 31, 2026

Advisory Details (2)

Auto-updated Aug 5, 2026
Patch available. Sources: redhat.
redhat

2501735 – (CVE-2026-16102) CVE-2026-16102 keycloak-services: keycloak-services: Default DCR policy allows role forgery via User Property mappers

https://bugzilla.redhat.com/show_bug.cgi?id=2501735
redhat Patch Available

CVE-2026-16102 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-16102

Vendor Advisories for CVE-2026-16102(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:26.4-222026-08-05redhat
redhatrhbk-openshift-rhel9/rhbk-openshift-rhel92026-08-05redhat
redhatrhbk/keycloak-rhel9-operator:26.6-112026-08-05redhat

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(2)

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

Data Freshness Timeline

(refreshed 36× in last 7d / 158× 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 254 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-16102?
CVE-2026-16102 is a high vulnerability published on August 5, 2026. A flaw was found in the Dynamic Client Registration (DCR) component of Keycloak, an identity and access management solution. The default DCR policy fails to properly validate the claim path for User Property mappers, allowing them to write values to sensitive internal claim locations. An attacker…
When was CVE-2026-16102 disclosed?
CVE-2026-16102 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16102 actively exploited?
CVE-2026-16102 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 74.3% of all scored CVEs.
What is the CVSS score of CVE-2026-16102?
CVE-2026-16102 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-16102?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16102, 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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