CVE-2022-27779

libcurl wrongly allows cookies to be set for Top Level Domains (TLDs) if thehost name is provided with a trailing dot.curl can be told to receive and send cookies. curl's "cookie engine" can bebuilt with or without [Public Suffix List](https://publicsuffix.org/)awareness. If PSL support not provided, a more rudimentary check exists to atleast prevent cookies from being set on TLDs. This check was broken if thehost name in the URL uses a trailing dot.This can allow arbitrary sites to set cookies that then would get sent to adifferent and unrelated site or domain.

Affected products

Alt Linux, Red Os, Libcurl

Haxx Curl

< 7.83.1

CVSS 3.1

5.3 MEDIUM

EPSS

2.6% (84th percentile)

Weakness

CWE-201

NVD status

Modified

Published

2022-06-01

No exploit for CVE-2022-27779 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.