CVE-2026-9793

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 94% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in Keycloak. When a JSON Web Encryption (JWE) encrypted request object is submitted, Keycloak may incorrectly process unsigned claims if the decrypted content is raw JSON, bypassing the configured signature policy. This allows a remote attacker to submit unauthorized claims, leading to a compromise of data integrity within the OpenID Connect (OIDC) authorization flow. While a redirect URI allowlist acts as a compensating control, this vulnerability violates OIDC Core and Financial-grade API (FAPI) signing requirements.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

May 28, 2026

Last Modified

August 20, 2026

Advisory Details (2)

Auto-updated Jun 10, 2026
Patch available. Sources: redhat.
redhat

2482460 – (CVE-2026-9793) CVE-2026-9793 keycloak: Keycloak: Security policy bypass in JWE-encrypted request object processing

https://bugzilla.redhat.com/show_bug.cgi?id=2482460
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-9793

Vendor Advisories for CVE-2026-9793(5)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhbk/keycloak-rhel9-operator:26.4-222026-08-05redhat
redhatrhbk/keycloak-rhel92026-08-05redhat
redhatrhbk/keycloak-rhel9-operator:26.6-112026-08-05redhat
mavenorg.keycloak:keycloak-services—ghsa

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 rangeFixed inDependents
org.keycloak:keycloak-services1.0-alpha-1 ... 9.0.3 (229 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 91× 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 207 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-9793?
CVE-2026-9793 is a high vulnerability published on May 28, 2026. A flaw was found in Keycloak. When a JSON Web Encryption (JWE) encrypted request object is submitted, Keycloak may incorrectly process unsigned claims if the decrypted content is raw JSON, bypassing the configured signature policy. This allows a remote attacker to submit unauthorized claims,…
When was CVE-2026-9793 disclosed?
CVE-2026-9793 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9793 actively exploited?
CVE-2026-9793 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 94.2% of all scored CVEs.
What is the CVSS score of CVE-2026-9793?
CVE-2026-9793 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-9793?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9793, 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

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