CVE Database›Document archive›CVE-2026-120632

CVE-2026-120632

perl-CGI: perl-CGI: Denial of Service via crafted multipart/related Content-Type header

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Severity

Moderate

Red Hat Product Security

5.3

CVSS 3.1

Review impact separately from score.

Published · November 4, 2026

Updated · November 4, 2026

Description

A flaw was found in the Perl CGI module. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by sending a specially crafted HTTP request. Due to an inefficient regular expression used when parsing multipart/related Content-Type headers, processing non-matching headers triggers catastrophic backtracking. This results in excessive CPU resource exhaustion and renders the application unresponsive, even without a request body.

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 · 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE-1333 · Inefficient Regular Expression Complexity