CVE-2025-27219

HIGH EPSS 51.5%
Published Mar 4, 20251y ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Mar 4, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
51.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-770

Affected Products 3

VendorProductVersionRange
ruby-langcgi* <0.3.5.1
ruby-langcgi*≥0.4.0  –  <0.4.2
ruby-langcgi0.3.6any

References 3

  • github.com https://github.com/rubysec/ruby-advisory-db/blob/master/gems/cgi/CVE-2025-27219.yml
    Third Party Advisory
  • hackerone.com https://hackerone.com/reports/2936778
    Permissions Required
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/03/msg00008.html

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.