CVE-2026-3009

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 74% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
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 security flaw in the IdentityBrokerService.performLogin endpoint of Keycloak allows authentication to proceed using an Identity Provider (IdP) even after it has been disabled by an administrator. An attacker who knows the IdP alias can reuse a previously generated login request to bypass the administrative restriction. This undermines access control enforcement and may allow unauthorized authentication through a disabled external provider.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100

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%
EPSS PROB
0.5%
EPSS %ILE
39th
KEV
Not listed

Published

March 5, 2026

Last Modified

September 14, 2026

Advisory Details (5)

Auto-updated Jun 30, 2026
Patch available. Sources: redhat.
redhat Patch Available
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3009.json
redhat

2441867 – (CVE-2026-3009) CVE-2026-3009 org.keycloak/keycloak-services: Improper Enforcement of Disabled Identity Provider in IdentityBrokerService (Authentication Bypass)

https://bugzilla.redhat.com/show_bug.cgi?id=2441867
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-3009
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:3948
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:3947

Vendor Advisories for CVE-2026-3009(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 / EcosystemFix (by version range) / PatchReleasedSource
redhatrhbk/keycloak-rhel9-operator:26.4-122026-03-05redhat
redhatrhbk/keycloak-rhel92026-03-05redhat

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.

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
org.keycloak:keycloak-services1.0-alpha-1 ... 9.0.3 (221 versions)
  • every version up to 26.5.5: fixed in 26.5.5
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 27× 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 131 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-3009?
CVE-2026-3009 is a high vulnerability published on March 5, 2026. A security flaw in the IdentityBrokerService.performLogin endpoint of Keycloak allows authentication to proceed using an Identity Provider (IdP) even after it has been disabled by an administrator. An attacker who knows the IdP alias can reuse a previously generated login request to bypass the…
When was CVE-2026-3009 disclosed?
CVE-2026-3009 was first published on March 5, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-3009 actively exploited?
CVE-2026-3009 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (39th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-3009?
CVE-2026-3009 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-3009?
A fix for CVE-2026-3009 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-3009 are linked in the Vendor Advisories panel on this page.

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