---
id: CVE-2022-27780
title: >-
  The curl URL parser wrongly accepts percent-encoded URL separators like
  '/'when decoding the host name part of a URL, making it a *different* URL
  usingthe wrong host name when it is later retrieved.For example, a URL like
  `http://example…
summary: >-
  The curl URL parser wrongly accepts percent-encoded URL separators like
  '/'when decoding the host name part of a URL, making it a *different* URL
  usingthe wrong host name when it is later retrieved.For example, a URL like
  `http://example…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-177
  - CWE-918
vendor: haxx
product: curl
affected:
  - 'curl >= 7.80.0, < 7.83.1'
  - hci_bootstrap_os
  - clustered_data_ontap
  - 'solidfire,_enterprise_sds_&_hci_storage_node'
  - solidfire_&_hci_management_node
  - h410s_firmware
  - h700s_firmware
  - h500s_firmware
  - h300s_firmware
  - 'universal_forwarder >= 8.2.0, < 8.2.12'
  - 'universal_forwarder >= 9.0.0, < 9.0.6'
  - universal_forwarder = 9.1.0
patched:
  - curl 7.83.1
  - universal_forwarder 9.0.6
published: '2022-06-02'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T17:17:37.217'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-27780'
references:
  - url: 'https://hackerone.com/reports/1553841'
    label: support@hackerone.com
  - url: 'https://security.gentoo.org/glsa/202212-01'
    label: support@hackerone.com
  - url: 'https://security.netapp.com/advisory/ntap-20220609-0009/'
    label: support@hackerone.com
  - url: 'https://hackerone.com/reports/1553841'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.gentoo.org/glsa/202212-01'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.netapp.com/advisory/ntap-20220609-0009/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-398330.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
  - exploit-available
  - score-dispute
epss: 0.02469
epssPercentile: 0.84188
ingestedAt: '2026-10-14T17:44:53.597Z'
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2024-07-26T20:10:43.314256Z'
scores:
  nvd: 7.5
  adp: 5.3
---

## Overview

The curl URL parser wrongly accepts percent-encoded URL separators like '/'when decoding the host name part of a URL, making it a *different* URL usingthe wrong host name when it is later retrieved.For example, a URL like `http://example.com%2F127.0.0.1/`, would be allowed bythe parser and get transposed into `http://example.com/127.0.0.1/`. This flawcan be used to circumvent filters, checks and more.

## Affected

- `curl >= 7.80.0, < 7.83.1`
- `hci_bootstrap_os`
- `clustered_data_ontap`
- `solidfire,_enterprise_sds_&_hci_storage_node`
- `solidfire_&_hci_management_node`
- `h410s_firmware`
- `h700s_firmware`
- `h500s_firmware`
- `h300s_firmware`
- `universal_forwarder >= 8.2.0, < 8.2.12`
- `universal_forwarder >= 9.0.0, < 9.0.6`
- `universal_forwarder = 9.1.0`

## Remediation

Upgrade past the affected range:

- `curl 7.83.1`
- `universal_forwarder 9.0.6`