---
id: CVE-2020-15114
aliases:
  - GHSA-2xhq-gv6c-p224
title: >-
  Etcd Gateway can include itself as an endpoint resulting in resource
  exhaustion
summary: >-
  Etcd Gateway can include itself as an endpoint resulting in resource
  exhaustion
severity: high
cvss: 7.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H'
vendor: etcd
product: go.etcd.io/etcd
ecosystem: go
affected:
  - 'go.etcd.io/etcd >= 3.4.0-rc.0, < 3.4.10'
  - go.etcd.io/etcd < 3.3.23
patched:
  - go.etcd.io/etcd 3.4.10
  - go.etcd.io/etcd 3.3.23
published: '2024-01-31'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:50:04.644136985Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-2xhq-gv6c-p224'
references:
  - url: 'https://github.com/etcd-io/etcd/security/advisories/GHSA-2xhq-gv6c-p224'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2020-15114'
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L6B6R43Y7M3DCHWK3L3UVGE2K6WWECMP
tags:
  - osv
  - go
epss: 0.01206
epssPercentile: 0.67027
ingestedAt: '2026-09-12T03:13:01.747Z'
---

## Overview

### Vulnerability type
Denial of Service

### Detail
The etcd gateway is a simple TCP proxy to allow for basic service discovery and access. However, it is possible to include the gateway address as an endpoint. This results in a denial of service, since the endpoint can become stuck in a loop of requesting itself until there are no more available file descriptors to accept connections on the gateway.

### References
Find out more on this vulnerability in the [security audit report](https://github.com/etcd-io/etcd/blob/master/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/master/security/security-release-process.md#product-security-committee-psc)

## Affected packages

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

## Remediation

Upgrade to a patched release:

- `go.etcd.io/etcd 3.4.10`
- `go.etcd.io/etcd 3.3.23`