CVE-2026-18573

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-08-02. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — Patch released 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

A fix is available — apply it.

A flaw was found in the keycloak-services component of Keycloak, which is used for managing authentication and authorization flows. The issue occurs when a realm administrator configures client policies to enforce specific authentication requirements on confidential clients. Due to improper evaluation of the client state during an update operation, an attacker with client management permissions can bypass these security policies by first creating a public client and then updating it to a confidential client with weaker authentication. This can result in the persistence of clients that do not comply with the intended security hardening of the realm.

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
19%
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

2509764 – (CVE-2026-18573) CVE-2026-18573 keycloak-services: keycloak-services: Client access-type policy condition bypass during client update

https://bugzilla.redhat.com/show_bug.cgi?id=2509764
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-18573

Vendor Advisories for CVE-2026-18573(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-openshift-rhel9/rhbk-openshift-rhel92026-09-16redhat
redhatrhbk/keycloak-rhel9-operator:26.6-202026-09-16redhat

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 139 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-18573?
CVE-2026-18573 is a medium vulnerability published on August 2, 2026. A flaw was found in the keycloak-services component of Keycloak, which is used for managing authentication and authorization flows. The issue occurs when a realm administrator configures client policies to enforce specific authentication requirements on confidential clients. Due to improper…
When was CVE-2026-18573 disclosed?
CVE-2026-18573 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-2026-18573 actively exploited?
CVE-2026-18573 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 80.7% of all scored CVEs.
What is the CVSS score of CVE-2026-18573?
CVE-2026-18573 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-18573?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-18573, 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

Explore the affected products and dependency analysis for CVE-2026-18573

Explore →

Is Your Infrastructure Affected by CVE-2026-18573?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs