CVE-2022-27780

HIGH

curl 7.80.0-7.83.0 - URL Hostname Spoofing via Percent-Encoded Separator Bypass

Title source: llm
STIX 2.1

Description

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.

References (3)

Core 3
Core References
Third Party Advisory vendor-advisory
https://security.gentoo.org/glsa/202212-01
Exploit, Third Party Advisory
https://hackerone.com/reports/1553841

Scores

CVSS v3 7.5
EPSS 0.0016
EPSS Percentile 36.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-177 CWE-918
Status published
Products (11)
haxx/curl 7.80.0 - 7.83.1
netapp/clustered_data_ontap
netapp/h300s_firmware
netapp/h410s_firmware
netapp/h500s_firmware
netapp/h700s_firmware
netapp/hci_bootstrap_os
netapp/solidfire\,_enterprise_sds_\&_hci_storage_node
netapp/solidfire_\&_hci_management_node
splunk/universal_forwarder 9.1.0
... and 1 more
Published Jun 02, 2022
Tracked Since Feb 18, 2026