---
id: GHSA-5x4g-q5rc-36jp
aliases:
  - GO-2024-2527
title: Etcd pkg Insecure ciphers are allowed by default
summary: Etcd pkg Insecure ciphers are allowed by default
severity: low
vendor: etcd
product: go.etcd.io/etcd/client/pkg/v3
ecosystem: go
affected:
  - 'go.etcd.io/etcd/client/pkg/v3 >= 3.4.0-rc.0, < 3.4.10'
  - go.etcd.io/etcd/client/pkg/v3 < 3.3.23
patched:
  - go.etcd.io/etcd/client/pkg/v3 3.4.10
  - go.etcd.io/etcd/client/pkg/v3 3.3.23
published: '2024-02-03'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:50:09.746246720Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-5x4g-q5rc-36jp'
references:
  - url: 'https://github.com/etcd-io/etcd/security/advisories/GHSA-5x4g-q5rc-36jp'
  - url: 'https://github.com/etcd-io/etcd'
tags:
  - osv
  - go
ingestedAt: '2026-09-12T03:13:01.756Z'
---

## Overview

### Vulnerability type
Cryptography

### Detail
The TLS ciphers list supported by etcd contains insecure cipher suites. Users can configure the desired ciphers using the “--cipher-suites” flag, and a default list of secure cipher suites is used if empty.

### Workarounds
By default, no action is required. If users want to specify cipher suites using the '--cipher-suites' flag, they should try not to specify insecure cipher suites. Please refer to the [security documentation](https://etcd.io/docs/v3.4/op-guide/security/).

### References
Find out more on this vulnerability in the [security audit report](https://github.com/etcd-io/etcd/blob/main/security/SECURITY_AUDIT.pdf)

### For more information
If you have any questions or comments about this advisory:
* Contact the [etcd security committee](https://github.com/etcd-io/etcd/blob/main/security/security-release-process.md#product-security-committee-psc)

## Affected packages

- `go.etcd.io/etcd/client/pkg/v3 >= 3.4.0-rc.0, < 3.4.10`
- `go.etcd.io/etcd/client/pkg/v3 < 3.3.23`

## Remediation

Upgrade to a patched release:

- `go.etcd.io/etcd/client/pkg/v3 3.4.10`
- `go.etcd.io/etcd/client/pkg/v3 3.3.23`