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: 0.5%CVSS: 8.1Exploit: None knownExposed services: Not assessed

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
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
37th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

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 / EcosystemFix (by version range) / 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 26× in last 7d / 126× 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 309 total refreshes for this CVE.

  1. 2026-10-04 23:33 UTCEG score recompute
  2. 2026-10-04 23:33 UTCVendor advisory
  3. 2026-10-04 23:33 UTCGHSA enrichment
  4. 2026-10-04 23:21 UTCEPSS rescore
  5. 2026-10-04 06:01 UTCEG score recompute
  6. 2026-10-04 06:01 UTCVendor advisory
  7. 2026-10-04 06:01 UTCGHSA enrichment
  8. 2026-10-03 14:25 UTCEPSS rescore
  9. 2026-10-03 01:09 UTCEG score recompute
  10. 2026-10-03 01:09 UTCVendor advisory
  11. 2026-10-03 01:09 UTCGHSA enrichment
  12. 2026-10-02 09:57 UTCEG score recompute
  13. 2026-10-02 09:57 UTCVendor advisory
  14. 2026-10-02 09:57 UTCGHSA enrichment
  15. 2026-10-01 19:49 UTCEPSS rescore
  16. 2026-10-01 15:21 UTCVendor advisory
  17. 2026-10-01 15:21 UTCGHSA enrichment
  18. 2026-10-01 02:19 UTCEG score recompute
  19. 2026-10-01 02:19 UTCVendor advisory
  20. 2026-10-01 02:19 UTCGHSA enrichment
  21. 2026-09-30 15:02 UTCEPSS rescore
  22. 2026-09-29 15:20 UTCEPSS rescore
  23. 2026-09-29 06:16 UTCEG score recompute
  24. 2026-09-29 06:16 UTCVendor advisory
  25. 2026-09-29 06:16 UTCGHSA enrichment
Show 75 more
  1. 2026-09-28 13:51 UTCEPSS rescore
  2. 2026-09-28 06:53 UTCVendor advisory
  3. 2026-09-28 06:53 UTCGHSA enrichment
  4. 2026-09-27 17:42 UTCEG score recompute
  5. 2026-09-27 17:42 UTCVendor advisory
  6. 2026-09-27 17:42 UTCGHSA enrichment
  7. 2026-09-27 13:47 UTCEPSS rescore
  8. 2026-09-26 15:58 UTCEPSS rescore
  9. 2026-09-25 04:32 UTCEG score recompute
  10. 2026-09-25 04:32 UTCVendor advisory
  11. 2026-09-25 04:32 UTCGHSA enrichment
  12. 2026-09-24 10:22 UTCVendor advisory
  13. 2026-09-24 10:22 UTCGHSA enrichment
  14. 2026-09-23 21:20 UTCEG score recompute
  15. 2026-09-23 21:20 UTCVendor advisory
  16. 2026-09-23 21:20 UTCGHSA enrichment
  17. 2026-09-23 04:09 UTCVendor advisory
  18. 2026-09-23 04:09 UTCGHSA enrichment
  19. 2026-09-22 15:07 UTCEG score recompute
  20. 2026-09-22 15:07 UTCVendor advisory
  21. 2026-09-22 15:07 UTCGHSA enrichment
  22. 2026-09-22 01:31 UTCEG score recompute
  23. 2026-09-22 01:31 UTCVendor advisory
  24. 2026-09-22 01:31 UTCGHSA enrichment
  25. 2026-09-20 20:48 UTCEG score recompute
  26. 2026-09-20 20:48 UTCVendor advisory
  27. 2026-09-20 20:48 UTCGHSA enrichment
  28. 2026-09-19 23:16 UTCEG score recompute
  29. 2026-09-19 23:16 UTCVendor advisory
  30. 2026-09-19 23:16 UTCGHSA enrichment
  31. 2026-09-19 07:41 UTCEG score recompute
  32. 2026-09-19 07:41 UTCVendor advisory
  33. 2026-09-19 07:41 UTCGHSA enrichment
  34. 2026-09-18 19:27 UTCEPSS rescore
  35. 2026-09-18 18:21 UTCVendor advisory
  36. 2026-09-18 18:21 UTCGHSA enrichment
  37. 2026-09-18 04:58 UTCEG score recompute
  38. 2026-09-18 04:58 UTCVendor advisory
  39. 2026-09-18 04:58 UTCGHSA enrichment
  40. 2026-09-17 15:56 UTCVendor advisory
  41. 2026-09-17 15:56 UTCGHSA enrichment
  42. 2026-09-17 01:07 UTCEG score recompute
  43. 2026-09-17 01:07 UTCVendor advisory
  44. 2026-09-17 01:07 UTCGHSA enrichment
  45. 2026-09-16 14:07 UTCEPSS rescore
  46. 2026-09-16 05:24 UTCEG score recompute
  47. 2026-09-16 05:24 UTCVendor advisory
  48. 2026-09-16 05:24 UTCGHSA enrichment
  49. 2026-09-16 05:14 UTCEPSS rescore
  50. 2026-09-15 16:22 UTCEG score recompute
  51. 2026-09-15 16:22 UTCVendor advisory
  52. 2026-09-15 16:22 UTCGHSA enrichment
  53. 2026-09-15 01:29 UTCVendor advisory
  54. 2026-09-15 01:29 UTCGHSA enrichment
  55. 2026-09-14 08:30 UTCVendor advisory
  56. 2026-09-14 08:30 UTCGHSA enrichment
  57. 2026-09-13 19:28 UTCEG score recompute
  58. 2026-09-13 19:28 UTCVendor advisory
  59. 2026-09-13 19:28 UTCGHSA enrichment
  60. 2026-09-13 16:46 UTCEPSS rescore
  61. 2026-09-13 05:47 UTCVendor advisory
  62. 2026-09-13 05:47 UTCGHSA enrichment
  63. 2026-09-12 16:45 UTCEG score recompute
  64. 2026-09-12 16:45 UTCVendor advisory
  65. 2026-09-12 16:45 UTCGHSA enrichment
  66. 2026-09-12 15:00 UTCEPSS rescore
  67. 2026-09-12 03:43 UTCEG score recompute
  68. 2026-09-12 03:43 UTCVendor advisory
  69. 2026-09-12 03:43 UTCGHSA enrichment
  70. 2026-09-11 14:52 UTCEPSS rescore
  71. 2026-09-11 14:40 UTCEG score recompute
  72. 2026-09-11 14:40 UTCVendor advisory
  73. 2026-09-11 14:40 UTCGHSA enrichment
  74. 2026-09-11 09:36 UTCEPSS rescore
  75. 2026-09-10 21:57 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 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 0.5% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-16102?
CVE-2026-16102 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-16102?
A fix for CVE-2026-16102 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-16102 are linked in the Vendor Advisories panel on this page.

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