CVE-2026-17526

HIGHPre-NVD 7.27.2—
EchelonGraph scoreHIGH confidence

Score 7.2 from GitHub Security Advisory (severity: HIGH) published 2026-09-16. a secondary CVSS source baseline 7.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — Patch released this week
7.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.2Exploit: None knownExposed: 0

A fix is available — apply it.

Keycloak is an open-source identity and access management solution. A vulnerability was discovered where a user with the impersonation role can impersonate a realm administrator. This allows the attacker to gain full administrative control over the realm, including the ability to manage users, clients, and roles.

CVSS v3
7.2
EG Score
7.2(high)
EG Risk
33(Track)
EG Risk 33/100SSVC: 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
Severity72% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
39%
KEV
Not listed

Published

September 16, 2026

Last Modified

September 16, 2026

Advisory Details (6)

Auto-updated Sep 16, 2026
Patch available. Sources: redhat.
redhat

2507409 – (CVE-2026-17526) CVE-2026-17526 keycloak-services: keycloak-services: Privilege escalation via impersonation role allows takeover of realm administrator accounts

https://bugzilla.redhat.com/show_bug.cgi?id=2507409
redhat Patch Available

CVE-2026-17526 - 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-2026-17526
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:68280
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:68278
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:68277
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:68276

Vendor Advisories for CVE-2026-17526(3)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhbk-openshift-rhel9/rhbk-openshift-rhel92026-09-16redhat
redhatrhbk/keycloak-rhel9-operator:26.6-202026-09-16redhat
redhatrhbk/keycloak-rhel9-operator:26.4-262026-09-16redhat

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.

Weakness Classification(1)

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

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 21× in last 7d / 21× 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.

  1. 2026-09-19 03:32 UTCEG score recompute
  2. 2026-09-19 03:32 UTCVendor advisory
  3. 2026-09-19 03:32 UTCGHSA enrichment
  4. 2026-09-18 19:27 UTCEPSS rescore
  5. 2026-09-18 16:28 UTCVendor advisory
  6. 2026-09-18 16:28 UTCGHSA enrichment
  7. 2026-09-18 05:23 UTCEG score recompute
  8. 2026-09-18 05:23 UTCVendor advisory
  9. 2026-09-18 05:23 UTCGHSA enrichment
  10. 2026-09-17 18:19 UTCVendor advisory
  11. 2026-09-17 18:19 UTCGHSA enrichment
  12. 2026-09-17 06:49 UTCGHSA enrichment
  13. 2026-09-16 19:45 UTCGHSA enrichment
  14. 2026-09-16 19:25 UTCEG score recompute
  15. 2026-09-16 19:25 UTCGHSA enrichment
  16. 2026-09-16 18:25 UTCEG score recompute
  17. 2026-09-16 17:37 UTCEG score recompute
  18. 2026-09-16 17:05 UTCEG score recompute
  19. 2026-09-16 16:25 UTCEG score recompute
  20. 2026-09-16 15:50 UTCEG score recompute
  21. 2026-09-16 15:49 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-17526?
CVE-2026-17526 is a high vulnerability published on September 16, 2026. Keycloak is an open-source identity and access management solution. A vulnerability was discovered where a user with the impersonation role can impersonate a realm administrator. This allows the attacker to gain full administrative control over the realm, including the ability to manage users,…
When was CVE-2026-17526 disclosed?
CVE-2026-17526 was first published in the National Vulnerability Database on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-17526 actively exploited?
CVE-2026-17526 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 61.4% of all scored CVEs.
What is the CVSS score of CVE-2026-17526?
CVE-2026-17526 has a CVSS v3 base score of 7.2 (NVD).
How do I remediate CVE-2026-17526?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-17526, 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

Explore the affected products and dependency analysis for CVE-2026-17526

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