---
id: CVE-2023-43618
aliases:
  - GHSA-7mp6-929p-pqhj
  - GO-2023-2070
title: Croc requires senders to provide local IP addresses in cleartext
summary: Croc requires senders to provide local IP addresses in cleartext
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
vendor: schollz
product: github.com/schollz/croc/v9
ecosystem: go
affected:
  - github.com/schollz/croc/v9 < 9.6.16
patched:
  - github.com/schollz/croc/v9 9.6.16
published: '2023-09-20'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:49:57.812421727Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-7mp6-929p-pqhj'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2023-43618'
  - url: 'https://github.com/schollz/croc/issues/597'
  - url: 'https://github.com/schollz/croc/pull/700'
  - url: >-
      https://github.com/schollz/croc/commit/6f5f16aa1c16b1ec6f31fec35be15de466d9701b
  - url: 'https://github.com/schollz/croc'
  - url: 'https://www.openwall.com/lists/oss-security/2023/09/08/2'
  - url: 'http://www.openwall.com/lists/oss-security/2023/09/21/5'
tags:
  - osv
  - go
epss: 0.00494
epssPercentile: 0.39754
ingestedAt: '2026-09-12T03:13:01.764Z'
---

## Overview

An issue was discovered in Croc before 9.6.16. The protocol requires a sender to provide its local IP addresses in cleartext via an `ips?` message.

## Affected packages

- `github.com/schollz/croc/v9 < 9.6.16`

## Remediation

Upgrade to a patched release:

- `github.com/schollz/croc/v9 9.6.16`