CVE-2026-9796

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

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

Score 6.5 from GitHub Security Advisory published 2026-05-28. A secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
6.5EG
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: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in Keycloak. An authenticated administrator with the manage-clients role can exploit a Time-of-check to time-of-use (TOCTOU) vulnerability in the name-based admin role checks. This allows the attacker to escalate their privileges to realm-admin for all users within the realm, granting them extensive control over the system. The composite role relationship persists even after the attacker's own permissions are revoked and across system reboots.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity65% × 45%
Impact severity (EG Severity): CVSS 6.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
30th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.

EG Severity
6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

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

A fix is available. Apply it within your standard update timelines.

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

May 28, 2026

Last Modified

September 15, 2026

Advisory Details (2)

Auto-updated Jun 13, 2026
Patch available. Sources: redhat.
Red Hat

2482464 – (CVE-2026-9796) CVE-2026-9796 keycloak: Keycloak: Privilege escalation via Time-of-Check to Time-of-Use (TOCTOU) vulnerability

https://bugzilla.redhat.com/show_bug.cgi?id=2482464
Red HatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-9796

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrhbk/keycloak-rhel9-operator:26.6-122026-08-18redhat
redhatrhbk-keycloak-rhel9/rhbk-keycloak-rhel92026-08-18redhat

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-server1.0-alpha-1-12062013 ... 1.2.0.Beta1 (14 versions)
  • every version up to 26.6.4: fixed in 26.6.4
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 35× 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.

Showing the most recent 100 of 209 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 109 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-20 16:34 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  2. 2026-10-19 16:34 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  3. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  4. 2026-10-18 02:56 UTCEG score recompute
  5. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  6. 2026-10-16 16:45 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  7. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  8. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  9. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  10. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  11. 2026-10-12 14:39 UTCEG score recompute
  12. 2026-10-11 19:10 UTCEG score recompute
  13. 2026-10-11 16:25 UTCEG score recompute
  14. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  15. 2026-10-11 13:37 UTCEG score recompute
  16. 2026-10-10 20:01 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  17. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  18. 2026-10-08 17:14 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  19. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  20. 2026-10-06 15:19 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  21. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  22. 2026-10-04 23:23 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  23. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  24. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  25. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.4% · 29th percentile
Show 75 more
  1. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  2. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  3. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  4. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  5. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  6. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  7. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  8. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  9. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  10. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  11. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  12. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  13. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  14. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  15. 2026-09-15 12:30 UTCEG score recompute
  16. 2026-09-15 12:30 UTCVendor advisory
  17. 2026-09-15 11:48 UTCEG score recompute
  18. 2026-09-15 11:48 UTCVendor advisory
  19. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  20. 2026-09-14 07:31 UTCEG score recompute
  21. 2026-09-14 07:31 UTCVendor advisory
  22. 2026-09-13 16:48 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  23. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  24. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  25. 2026-09-11 09:38 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  26. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  27. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  28. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  29. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  30. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  31. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  32. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  33. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  34. 2026-08-30 19:18 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  35. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  36. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  37. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  38. 2026-08-26 14:47 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  39. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  40. 2026-08-25 05:08 UTCEG score recompute
  41. 2026-08-25 05:08 UTCVendor advisory
  42. 2026-08-24 14:18 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  43. 2026-08-23 14:51 UTCEG score recompute
  44. 2026-08-23 14:51 UTCVendor advisory
  45. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  46. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  47. 2026-08-21 20:27 UTCVendor advisory
  48. 2026-08-20 11:11 UTCEG score recompute
  49. 2026-08-20 11:11 UTCVendor advisory
  50. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  51. 2026-08-19 04:22 UTCEG score recompute
  52. 2026-08-19 04:22 UTCVendor advisory
  53. 2026-08-19 03:32 UTCEG score recompute
  54. 2026-08-19 03:32 UTCVendor advisory
  55. 2026-08-18 22:24 UTCEG score recompute
  56. 2026-08-18 21:48 UTCEG score recompute
  57. 2026-08-18 13:49 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  58. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  59. 2026-08-17 09:07 UTCEG score recompute
  60. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  61. 2026-08-16 03:07 UTCEG score recompute
  62. 2026-08-16 02:15 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  63. 2026-08-15 02:14 UTCEG score recompute
  64. 2026-08-15 01:31 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  65. 2026-08-14 01:22 UTCEG score recompute
  66. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  67. 2026-08-12 13:51 UTCEG score recompute
  68. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  69. 2026-08-11 13:43 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  70. 2026-08-11 12:27 UTCEG score recompute
  71. 2026-08-11 12:02 UTCEG score recompute
  72. 2026-08-11 01:14 UTCEG score recompute
  73. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  74. 2026-08-10 00:22 UTCEG score recompute
  75. 2026-08-09 13:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile

Frequently asked(5)

What is CVE-2026-9796?
CVE-2026-9796 is a medium-severity vulnerability; its CVE record was published on May 28, 2026. A flaw was found in Keycloak. An authenticated administrator with the manage-clients role can exploit a Time-of-check to time-of-use (TOCTOU) vulnerability in the name-based admin role checks. This allows the attacker to escalate their privileges to realm-admin for all users within the realm,…
When was CVE-2026-9796 made public?
CVE-2026-9796 was made public on May 28, 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 May 28, 2026. EchelonGraph's copy of the record carries a last-modified date of September 15, 2026; the record at its source may have been updated since.
Is CVE-2026-9796 actively exploited?
CVE-2026-9796 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (30th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-9796?
CVE-2026-9796 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-9796?
A fix for CVE-2026-9796 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-9796 are linked in the Vendor Advisories panel on this page.

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