CVE-2026-4630

MEDIUMPre-NVD 6.86.8—
EchelonGraph scoreMEDIUM confidence

Score 6.8 from GitHub Security Advisory published 2026-05-19. a secondary CVSS source baseline 6.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in Keycloak. An authenticated client could exploit an Insecure Direct Object Reference (IDOR) vulnerability in the Authorization Services Protection API endpoint. By knowing or obtaining a resource's unique identifier (UUID) belonging to another Resource Server within the same realm, the client could bypass authorization checks. This allows the client to perform unauthorized GET, PUT, and DELETE operations on resources, leading to information disclosure and potential unauthorized modification or deletion of data.

CVSS v3
6.8
EG Score
6.8MEDIUMmedium confidence
EG Risk
31
EG Risk 31/100

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
Severity68% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.4%
EPSS %ILE
29th
KEV
Not listed

Published

May 19, 2026

Last Modified

June 3, 2026

Advisory Details (4)

Auto-updated Jun 14, 2026
Patch available. Sources: redhat.
redhat

2450245 – (CVE-2026-4630) CVE-2026-4630 keycloak: Keycloak: Unauthorized resource access and data modification via Insecure Direct Object Reference

https://bugzilla.redhat.com/show_bug.cgi?id=2450245
redhatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-4630
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2026:19597
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2026:19596

Vendor Advisories for CVE-2026-4630(3)

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:26.4-172026-05-20redhat
redhatrhbk/keycloak-rhel92026-05-20redhat

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 (226 versions)
  • every version up to 26.6.2: fixed in 26.6.2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 20× 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 228 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-4630?
CVE-2026-4630 is a medium vulnerability published on May 19, 2026. A flaw was found in Keycloak. An authenticated client could exploit an Insecure Direct Object Reference (IDOR) vulnerability in the Authorization Services Protection API endpoint. By knowing or obtaining a resource's unique identifier (UUID) belonging to another Resource Server within the same…
When was CVE-2026-4630 disclosed?
CVE-2026-4630 was first published on May 19, 2026, with the most recent update on June 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-4630 actively exploited?
CVE-2026-4630 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (29th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-4630?
CVE-2026-4630 has a CVSS base score of 6.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-4630?
A fix for CVE-2026-4630 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-4630 are linked in the Vendor Advisories panel on this page.

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