CVE-2022-27780
curl: percent-encoded path separator in URL host
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 11, 2022
Updated · June 30, 2026
Description
A vulnerability was found in curl. This issue occurs because the curl URL parser wrongly accepts percent-encoded URL separators like '/' when decoding the hostname part of a URL, making it a different URL using the wrong hostname when it is later retrieved. This flaw allows a malicious actor to make circumventing filters.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE-838 · Inappropriate Encoding for Output Context