CVE-2025-27219

Published: Mar 4, 2025Modified: Jun 17, 2026

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

In the CGI gem before 0.4.2 for Ruby, the CGI::Cookie.parse method in the CGI library contains a potential Denial of Service (DoS) vulnerability. The method does not impose any limit on the length of the raw cookie value it processes. This oversight can lead to excessive resource consumption when parsing extremely large cookies.

Affected (3)

Products: Ruby Lang: Cgi

1 product

Configuration A

3 vulnerable

Vulnerable Software	Affected Versions
Ruby Lang Cgi	Before 0.3.5.1
Ruby Lang Cgi	From 0.4.0 to 0.4.2
Ruby Lang Cgi	Version 0.3.6

Related CWEs

Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

References (3)

https://github.com/rubysec/ruby-advisory-db/blob/master/gems/cgi/CVE-2025-27219.yml

Source: cve@mitre.org

Third Party Advisory

https://hackerone.com/reports/2936778

Source: cve@mitre.org

Permissions Required

https://lists.debian.org/debian-lts-announce/2025/03/msg00008.html

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.