# CVE-2026-4629: Keycloak: keycloak: privilege escalation through hardcoded role mapper injection

> A privileged user can inject a hardcoded role mapper to bypass restrictions and gain full administrative access to the realm.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 Jun 2026
- **Updated:** 22 Oct 2026
- **Also known as:** GHSA-m4j4-8chj-8g5f

## What is CVE-2026-4629?

CVE-2026-4629 is a medium-severity vulnerability in Redhat Build of Keycloak, published on 30 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official 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.

Weakness: CWE-266 (Incorrect Privilege Assignment)

## Which versions are affected by CVE-2026-4629?

It affects 1 product.


Products: Redhat Build of Keycloak.

## How do I fix CVE-2026-4629?

No fix has been published for CVE-2026-4629 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-4629 being exploited?

There is no known exploitation of CVE-2026-4629 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Build of Keycloak

- [CVE-2026-15572](https://insights.sbomify.com/CVE-2026-15572/): Keycloak-services: keycloak-services: dcr protocol mapper type-swap policy bypass allows privilege escalation (high 8.8)
- [CVE-2026-3047](https://insights.sbomify.com/CVE-2026-3047/): Keycloak SAML Broken has Authentication Bypass by Primary Weakness (high 8.8)
- [CVE-2026-15573](https://insights.sbomify.com/CVE-2026-15573/): Keycloak-services: keycloak-services: authorization bypass via unnormalized uri matching in pathmatcher (high 8.1)
- [CVE-2026-16102](https://insights.sbomify.com/CVE-2026-16102/): Keycloak-services: keycloak-services: default dcr policy allows role forgery via user property mappers (high 8.1)
- [CVE-2026-1609](https://insights.sbomify.com/CVE-2026-1609/): Org.keycloak/keycloak-quarkus-server: keycloak: unauthorized access via jwt authorization grant with disabled users (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4629 and fix it if it is affected.

What it is: CVE-2026-4629 is a medium-severity vulnerability in Redhat Build of Keycloak, published on 30 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-4629 in the wild and no public exploit code.

Affected product: Redhat Build of Keycloak. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-4629/ (Markdown: https://insights.sbomify.com/CVE-2026-4629/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4629
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4629
- OSV: https://osv.dev/vulnerability/CVE-2026-4629

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-4629/
Summaries are generated and may contain mistakes; the official description above is the record.