CVE-2026-89298

MEDIUMPre-NVD 4.94.9
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 4.9 from GitHub Security Advisory published 2026-09-11. A secondary CVSS source baseline 4.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week
4.9EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 4.9Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

A flaw was found in the Dynamic Client Registration service of Keycloak, an open-source identity and access management solution. The issue occurs when a user with the view-clients role accesses the client registration endpoint to retrieve client details. Due to a failure to mask sensitive information, the service returns the client's confidential secret in cleartext. This could allow a read-only administrator to obtain full access to the affected client's account and potentially escalate their privileges within the realm.

CVSS v3
4.9
EG Score
4.9MEDIUMmedium confidence
EG Risk
22
EG Risk 22/100

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 (value × EchelonGraph’s weight)
Severity49% × 45%
The EG Score, 4.9 of 10.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 11, 2026

Last Modified

September 16, 2026

Advisory Details (2)

Auto-updated Sep 11, 2026
No fix on record yet. Sources: redhat.
Red Hat

2531871 – (CVE-2026-89298) CVE-2026-89298 keycloak-services: keycloak-services: Confidential client secret disclosed to view-clients role via Client Registration GET

https://bugzilla.redhat.com/show_bug.cgi?id=2531871
Red HatMentions a patch (unverified)

CVE-2026-89298 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-89298

Vendor Advisories for CVE-2026-89298(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 77× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-10-12 14:48 UTCEG score recompute
  4. 2026-10-11 19:15 UTCEG score recompute
  5. 2026-10-11 16:32 UTCEG score recompute
  6. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  7. 2026-10-11 13:48 UTCEG score recompute
  8. 2026-10-11 06:58 UTCEG score recompute
  9. 2026-10-11 06:58 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  10. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  11. 2026-10-10 01:47 UTCEG score recompute
  12. 2026-10-10 01:47 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  13. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  14. 2026-10-08 23:35 UTCEG score recompute
  15. 2026-10-08 23:34 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  16. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  17. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  18. 2026-10-07 19:48 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  19. 2026-10-06 16:52 UTCEG score recompute
  20. 2026-10-06 16:52 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  21. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  22. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  23. 2026-10-05 14:40 UTCEG score recompute
  24. 2026-10-05 14:40 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  25. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
Show 63 more
  1. 2026-10-04 12:29 UTCEG score recompute
  2. 2026-10-04 12:29 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  3. 2026-10-03 10:17 UTCEG score recompute
  4. 2026-10-03 10:17 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  5. 2026-10-02 06:14 UTCEG score recompute
  6. 2026-10-02 06:14 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  7. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  8. 2026-10-01 04:03 UTCEG score recompute
  9. 2026-10-01 04:03 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  10. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  11. 2026-09-30 01:50 UTCEG score recompute
  12. 2026-09-30 01:50 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  13. 2026-09-28 20:46 UTCEG score recompute
  14. 2026-09-28 20:46 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  15. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  16. 2026-09-27 18:34 UTCEG score recompute
  17. 2026-09-27 18:34 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  18. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  19. 2026-09-26 16:22 UTCEG score recompute
  20. 2026-09-26 16:22 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  21. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  22. 2026-09-25 13:46 UTCEG score recompute
  23. 2026-09-25 13:46 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  24. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  25. 2026-09-24 11:32 UTCEG score recompute
  26. 2026-09-24 11:32 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  27. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  28. 2026-09-23 09:20 UTCEG score recompute
  29. 2026-09-23 09:20 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  30. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  31. 2026-09-22 07:09 UTCEG score recompute
  32. 2026-09-22 07:08 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  33. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  34. 2026-09-21 04:57 UTCEG score recompute
  35. 2026-09-21 04:56 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  36. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  37. 2026-09-20 02:34 UTCEG score recompute
  38. 2026-09-20 02:34 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  39. 2026-09-19 00:22 UTCEG score recompute
  40. 2026-09-19 00:22 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  41. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  42. 2026-09-17 22:11 UTCEG score recompute
  43. 2026-09-17 22:11 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  44. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  45. 2026-09-16 19:59 UTCEG score recompute
  46. 2026-09-16 19:59 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  47. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  48. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  49. 2026-09-16 00:19 UTCEG score recompute
  50. 2026-09-16 00:18 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  51. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  52. 2026-09-14 22:06 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  53. 2026-09-13 19:52 UTCEG score recompute
  54. 2026-09-13 19:52 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  55. 2026-09-13 16:48 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  56. 2026-09-12 17:40 UTCEG score recompute
  57. 2026-09-12 17:40 UTCGHSA enrichmentGHSA-386r-m7rr-67p4 · GitHub CVSS 4.9
  58. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.2% · 15th percentile
  59. 2026-09-11 15:28 UTCEG score recompute
  60. 2026-09-11 15:04 UTCEG score recompute
  61. 2026-09-11 14:23 UTCEG score recompute
  62. 2026-09-11 13:35 UTCEG score recomputeFirst assessed: 4.9 MEDIUM
  63. 2026-09-11 13:34 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-89298?
CVE-2026-89298 is a medium-severity vulnerability; its CVE record was published on September 11, 2026. A flaw was found in the Dynamic Client Registration service of Keycloak, an open-source identity and access management solution. The issue occurs when a user with the view-clients role accesses the client registration endpoint to retrieve client details. Due to a failure to mask sensitive…
When was CVE-2026-89298 made public?
CVE-2026-89298 was made public on September 10, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on September 11, 2026. EchelonGraph's copy of the record carries a last-modified date of September 16, 2026; the record at its source may have been updated since.
Is CVE-2026-89298 actively exploited?
CVE-2026-89298 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-89298?
CVE-2026-89298 has a CVSS base score of 4.9 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-89298?
No fix for CVE-2026-89298 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-89298 are linked in the Vendor Advisories panel on this page.

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