CVE-2022-27780EPSS p84.6%
CVE-2022-27780CVE-2022-27780
haxx / curl
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.
Scoring
| CVSS | 7.5 () |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| EPSS | 2.52% probability of exploitation · percentile 84.6% · 2026-10-17T12:00:28Z |
| Last modified | 2026-10-14 |