How severe is CVE-2026-4629?

CVE-2026-4629 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-4629 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-4629?

CVE-2026-4629 affects Redhat Build Of Keycloak. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-4629?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-4629 published?

CVE-2026-4629 was published on 2026-06-30 and last updated on 2026-07-01.

CVE-2026-4629

CVE-2026-4629 is a medium-severity vulnerability in Redhat Build Of Keycloak with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-266.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-266
Affected product: Redhat Build Of Keycloak
Published: 2026-06-30
Last modified: 2026-07-01

Description

A flaw was found in Keycloak. A highly privileged user with `manage-clients` permission can exploit this vulnerability by injecting a hardcoded role mapper into any client. This action allows the user to bypass existing scope restrictions and inject the `realm-admin` role into generated tokens, resulting in privilege escalation and full administrative access to the realm.

Frequently asked questions

What is CVE-2026-4629?: A flaw was found in Keycloak. A highly privileged user with `manage-clients` permission can exploit this vulnerability by injecting a hardcoded role mapper into any client. This action allows the user to bypass existing scope restrictions and inject the `realm-admin` role into generated tokens, resulting in privilege escalation and full administrative access to the realm.
How severe is CVE-2026-4629?: CVE-2026-4629 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-4629 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-4629?: CVE-2026-4629 affects Redhat Build Of Keycloak. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-4629?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-4629 published?: CVE-2026-4629 was published on 2026-06-30 and last updated on 2026-07-01.

References

Affected products (1)

cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:*:*:*:*

More vulnerabilities in Redhat Build Of Keycloak

CVE-2026-3047 — High (CVSS 8.8): A flaw was found in org.keycloak.broker.saml. When a disabled Security Assertion Markup Language (SAML) client is…
CVE-2026-11800 — High (CVSS 8.1): A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant flow allows an…
CVE-2026-9800 — High (CVSS 8.1): A flaw was found in Keycloak Policy Enforcer. This vulnerability allows any authenticated user to bypass all…
CVE-2026-7504 — High (CVSS 8.1): A flaw was found in Keycloak's URL validation logic during redirect operations. By crafting a malicious request, an…
CVE-2026-4636 — High (CVSS 8.1): A flaw was found in Keycloak. An authenticated user with the uma_protection role can bypass User-Managed Access (UMA)…
CVE-2026-3009 — High (CVSS 8.1): A security flaw in the IdentityBrokerService.performLogin endpoint of Keycloak allows authentication to proceed using…

All CVEs affecting Redhat Build Of Keycloak →

Other CWE-266 (Incorrect Privilege Assignment) vulnerabilities

CVE-2026-23800 — Critical (CVSS 10.0): Incorrect Privilege Assignment vulnerability in Modular DS modular-connector allows Privilege Escalation.This issue…
CVE-2025-41115 — Critical (CVSS 10.0): SCIM provisioning was introduced in Grafana Enterprise and Grafana Cloud in April to improve how organizations manage…
CVE-2024-9479 — Critical (CVSS 10.0): Improper Privilege Management vulnerability in upKeeper Solutions upKeeper Instant Privilege Access allows Privilege…
CVE-2024-9478 — Critical (CVSS 10.0): Improper Privilege Management vulnerability in upKeeper Solutions upKeeper Instant Privilege Access allows Privilege…
CVE-2026-42368 — Critical (CVSS 9.9): A privilege escalation vulnerability exists in the Web Interface functionality of GeoVision LPC2011/LPC2211 1.10. A…
CVE-2026-32922 — Critical (CVSS 9.9): OpenClaw before 2026.3.11 contains a privilege escalation vulnerability in device.token.rotate that allows callers with…

Browse all CWE-266 (Incorrect Privilege Assignment) vulnerabilities →