# CVE-2023-32187: K3s apiserver port is vulnerable to unauthenticated remote denial-of-service (DoS) attack via TLS SAN stuffing attack

Source: https://junglewise.ai/threats/cve-2023-32187-k3s-apiserver-port-is-vulnerable-to-unauthenticated-remote-denial  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-09-11  
License: CC BY 4.0 with a link back

CVE-2023-32187 · Severity: low · CVSS 3.1 · Published 2023-09-11

K3s apiserver port is vulnerable to unauthenticated remote denial-of-service (DoS) attack via TLS SAN stuffing attack

Technologies: [github.com/k3s-io/k3s (Go)](https://junglewise.ai/threats/technologies/github-com-k3s-io-k3s). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2023-32187 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-32187 being exploited in the wild.

**How severe is CVE-2023-32187?** Low severity, with a CVSS score of 3.1, published 11 September 2023.

**Which products and versions are affected?** github.com/k3s-io/k3s (Go) SEMVER:introduced=0,fixed=1.24.17.

**Is there a fix for CVE-2023-32187?** Yes. github.com/k3s-io/k3s (Go): upgrade to 1.24.17 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2023-32187?** Check whether you run github.com/k3s-io/k3s (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/k3s-io/k3s (Go): upgrade to 1.24.17 or later

  ```sh
  go get github.com/k3s-io/k3s@v1.24.17
  ```


## Affected products

- github.com/k3s-io/k3s (Go) SEMVER:introduced=0,fixed=1.24.17

## Identifiers

- CVE-2023-32187
- GHSA-m4hf-6vgr-75r2

## Related threats

- [k3s-io K3s path traversal in etcd snapshot decompression](https://junglewise.ai/threats/cve-2026-54250-k3s-io-k3s-path-traversal-in-etcd-snapshot-decompression)
- [GO-2025-3646 - CNCF K3s Kubernetes kubelet configuration exposes credentials in github.com/k3s-io/k3s](https://junglewise.ai/threats/cve-2025-46599-cncf-k3s-kubernetes-kubelet-configuration-exposes-credentials)