A flaw was found in Keycloak. A vulnerability exists in the jwt-authorization-grant flow where the server fails to verify if an Identity Provider (IdP) is enabled before issuing tokens. The issuer lookup mechanism (lookupIdentityProviderFromIssuer) retrieves the IdP configuration but does not filter for isEnabled=false. If an administrator disables an IdP (e.g., due to a compromise or offboarding), an entity possessing that IdP's signing key can still generate valid JWT assertions that Keycloak accepts, resulting in the issuance of valid access tokens.
CVE-2026-1486
This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 91% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 8.8
- EG Score
- 8.8(medium)
- EPSS
- 36.6%
- KEV
- Not listed
Published
February 9, 2026
Last Modified
July 15, 2026
Advisory Details (4)
Auto-updated May 22, 20262433347 – (CVE-2026-1486) CVE-2026-1486 org.keycloak.protocol.oidc.grants: Disabled identity providers are still accepted for JWT Authorization Grant
https://bugzilla.redhat.com/show_bug.cgi?id=2433347Patch Availability(2)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | rhbk/keycloak-rhel9-operator:26.4-10 | 2026-02-09 | redhat |
| redhat | rhbk/keycloak-rhel9 | 2026-02-09 | redhat |
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)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| org.keycloak:keycloak-services | 1.0-alpha-1 ... 9.0.3 (216 versions) | 26.4.9 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(2)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 12× in last 7d / 38× 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 107 total refreshes for this CVE.
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- 2026-05-20 23:16 UTCVendor advisory
Frequently asked(5)
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Dependency Blast Radius
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