---
id: CVE-2023-49568
aliases:
  - GHSA-mw99-9chc-xw7r
  - GO-2024-2466
title: Maliciously crafted Git server replies can cause DoS on go-git clients
summary: Maliciously crafted Git server replies can cause DoS on go-git clients
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
vendor: go-git
product: github.com/go-git/go-git/v5
ecosystem: go
affected:
  - github.com/go-git/go-git/v5 < 5.11.0
  - 'gopkg.in/src-d/go-git.v4 >= 4.7.1, <= 4.13.1'
patched:
  - github.com/go-git/go-git/v5 5.11.0
published: '2023-12-27'
updated: '2026-07-08'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-mw99-9chc-xw7r'
references:
  - url: 'https://github.com/go-git/go-git/security/advisories/GHSA-mw99-9chc-xw7r'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2023-49568'
  - url: 'https://github.com/go-git/go-git'
tags:
  - osv
  - go
epss: 0.00698
epssPercentile: 0.50987
ingestedAt: '2026-07-09T18:56:36.658Z'
---

## Overview

### Impact
A denial of service (DoS) vulnerability was discovered in go-git versions prior to `v5.11`. This vulnerability allows an attacker to perform denial of service attacks by providing specially crafted responses from a Git server which triggers resource exhaustion in `go-git` clients. 

Applications using only the in-memory filesystem supported by `go-git` are not affected by this vulnerability.
This is a `go-git` implementation issue and does not affect the upstream `git` cli.

### Patches
Users running versions of `go-git` from `v4` and above are recommended to upgrade to `v5.11` in order to mitigate this vulnerability.

### Workarounds
In cases where a bump to the latest version of `go-git` is not possible, we recommend limiting its use to only trust-worthy Git servers.

## Credit
Thanks to Ionut Lalu for responsibly disclosing this vulnerability to us.

### References
- [GHSA-mw99-9chc-xw7r](https://github.com/go-git/go-git/security/advisories/GHSA-mw99-9chc-xw7r)


## Affected packages

- `github.com/go-git/go-git/v5 < 5.11.0`
- `gopkg.in/src-d/go-git.v4 >= 4.7.1, <= 4.13.1`

## Remediation

Upgrade to a patched release:

- `github.com/go-git/go-git/v5 5.11.0`