CVE-2022-27779

curl: cookie for trailing dot TLD

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Severity

Moderate

Red Hat Product Security

4.3

CVSS 3.1

Review impact separately from score.

Published · May 11, 2022

Updated · June 30, 2026

Description

A vulnerability was found in curl. The issue occurs because curl wrongly allows HTTP cookies to be set for Top Level Domains (TLDs) if the hostname is provided with a trailing dot. This flaw allows arbitrary sites to set cookies that get sent to a different and unrelated site or domain by a malicious actor.

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 · 4.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CWE-201 · Insertion of Sensitive Information Into Sent Data