CVE-2026-18570

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

Score 5.4 from GitHub Security Advisory published 2026-08-02. a secondary CVSS source baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — Patch released this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in the full-scope-disabled client-policy executor within the keycloak-services component. This component is responsible for enforcing security policies during client registration and configuration in Red Hat Build of Keycloak. The issue occurs because the executor only validates the fullScopeAllowed field when it is explicitly provided in a request. By omitting this field, a delegated user can bypass the policy, resulting in a client created with full scope access. This allows the client to obtain tokens with unauthorized role mappings.

CVSS v3
5.4
EG Score
5.4(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

August 2, 2026

Last Modified

September 16, 2026

Advisory Details (2)

Auto-updated Aug 2, 2026
Patch available. Sources: redhat.
redhat

2509756 – (CVE-2026-18570) CVE-2026-18570 keycloak-services: keycloak-services: Full-scope-disabled client policy validation bypass via omitted fullScopeAllowed

https://bugzilla.redhat.com/show_bug.cgi?id=2509756
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-18570

Vendor Advisories for CVE-2026-18570(2)

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:26.6-202026-09-16redhat
redhatrhbk-openshift-rhel9/rhbk-openshift-rhel92026-09-16redhat

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(1)

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

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 26× in last 7d / 85× 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 144 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-18570?
CVE-2026-18570 is a medium vulnerability published on August 2, 2026. A flaw was found in the full-scope-disabled client-policy executor within the keycloak-services component. This component is responsible for enforcing security policies during client registration and configuration in Red Hat Build of Keycloak. The issue occurs because the executor only validates…
When was CVE-2026-18570 disclosed?
CVE-2026-18570 was first published in the National Vulnerability Database on August 2, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-18570 actively exploited?
CVE-2026-18570 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 92.4% of all scored CVEs.
What is the CVSS score of CVE-2026-18570?
CVE-2026-18570 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-18570?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18570, 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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