# CVE-2019-3876: Cross-site request forgery in web-console

> Attackers can exploit missing CSRF protections in the OpenShift OAuth server to generate CLI tokens, potentially leading to account takeover.

- **Severity:** Medium 5.0 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 1 Apr 2019
- **Updated:** 4 Aug 2024

## What is CVE-2019-3876?

CVE-2019-3876 is a medium-severity vulnerability in Redhat Openshift Container Platform, published on 1 Apr 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A flaw was found in the /oauth/token/request custom endpoint of the OpenShift OAuth server allowing for XSS generation of CLI tokens due to missing X-Frame-Options and CSRF protections. If not otherwise prevented, a separate XSS vulnerability via JavaScript could further allow for the extraction of these tokens.

Weakness: CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2019-3876?

It affects 1 product.


Products: Redhat Openshift Container Platform.

## How do I fix CVE-2019-3876?

Apply the vendor's patch.

## Is CVE-2019-3876 being exploited?

There is no known exploitation of CVE-2019-3876 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Openshift Container Platform

- [CVE-2020-27836](https://insights.sbomify.com/CVE-2020-27836/): Missing authorization in cluster-ingress-operator (critical 9.8)
- [CVE-2018-1085](https://insights.sbomify.com/CVE-2018-1085/): Misconfiguration in openshift-ansible (critical 9.0)
- [CVE-2026-54099](https://insights.sbomify.com/CVE-2026-54099/): Privilege escalation in Red Hat OpenShift Container Platform 4 (high 8.8)
- [CVE-2026-1784](https://insights.sbomify.com/CVE-2026-1784/): Ose-cluster-ingress-operator: remote code execution through haproxy configuration injection (high 8.8)
- [CVE-2021-20182](https://insights.sbomify.com/CVE-2021-20182/): Privilege escalation in openshift (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-3876 and fix it if it is affected.

What it is: CVE-2019-3876 is a medium-severity vulnerability in Redhat Openshift Container Platform, published on 1 Apr 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-3876 in the wild and no public exploit code.

Affected product: Redhat Openshift Container Platform. 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-2019-3876/ (Markdown: https://insights.sbomify.com/CVE-2019-3876/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-3876
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-3876
- OSV: https://osv.dev/vulnerability/CVE-2019-3876

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-3876/
Summaries are generated and may contain mistakes; the official description above is the record.