# CVE-2020-14302: Other in keycloak

> Attackers can replay authentication requests using reused state parameters, bypassing security controls in Keycloak identity provider integrations.

- **Severity:** Medium 4.9 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/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:** Yes
- **Published:** 15 Dec 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-74gp-x82w-5v28

## What is CVE-2020-14302?

CVE-2020-14302 is a medium-severity vulnerability in Redhat Keycloak, published on 15 Dec 2020. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A flaw was found in Keycloak before 13.0.0 where an external identity provider, after successful authentication, redirects to a Keycloak endpoint that accepts multiple invocations with the use of the same "state" parameter. This flaw allows a malicious user to perform replay attacks.

Weakness: CWE-294 (Authentication Bypass by Capture-replay)

## Which versions are affected by CVE-2020-14302?

It affects 1 product.


Products: Redhat Keycloak.

## How do I fix CVE-2020-14302?

Upgrade to a fixed version.

## Is CVE-2020-14302 being exploited?

There is no known exploitation of CVE-2020-14302 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Keycloak

- [CVE-2022-4361](https://insights.sbomify.com/CVE-2022-4361/): Keycloak vulnerable to cross-site scripting when validating URI-schemes on SAML and OIDC (critical 10.0)
- [CVE-2022-1245](https://insights.sbomify.com/CVE-2022-1245/): Keycloak vulnerable to privilege escalation on Token Exchange feature (critical 9.8)
- [CVE-2021-20195](https://insights.sbomify.com/CVE-2021-20195/): keycloak Self Stored Cross-site Scripting vulnerability (critical 9.6)
- [CVE-2019-14910](https://insights.sbomify.com/CVE-2019-14910/): Keycloak Authentication Error (critical 9.3)
- [CVE-2019-14909](https://insights.sbomify.com/CVE-2019-14909/): Keycloak Authentication Error (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-14302 and fix it if it is affected.

What it is: CVE-2020-14302 is a medium-severity vulnerability in Redhat Keycloak, published on 15 Dec 2020. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-14302 in the wild and no public exploit code.

Affected product: Redhat 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-2020-14302/ (Markdown: https://insights.sbomify.com/CVE-2020-14302/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-14302
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-14302
- OSV: https://osv.dev/vulnerability/CVE-2020-14302

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-14302/
Summaries are generated and may contain mistakes; the official description above is the record.