RHEL 9 : perl-CGI (RHSA-2026:99215)

critical Nessus Plugin ID 379410

Synopsis

The remote Red Hat host is missing one or more security updates for perl-CGI.

Description

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:99215 advisory.

CGI.pm is a stable, complete and mature solution for processing and preparing HTTP requests and responses.
Major features including processing form submissions, file uploads, reading and writing cookies, query string generation and manipulation, and processing and preparing HTTP headers. Some HTML generation utilities are included as well. CGI.pm performs very well in in a vanilla CGI.pm environment and also comes with built-in support for mod_perl and mod_perl2 as well as FastCGI.

Security Fix(es):

* perl-cgi: perl-cgi: Denial of Service via unenforced request and upload limits (CVE-2026-120650)

* perl-cgi: perl-cgi: arbitrary file write via unsanitized upload filenames (CVE-2026-120641)

* perl-cgi: perl-cgi: Security feature bypass via untainted request parameters (CVE-2026-120642)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL perl-CGI package based on the guidance in RHSA-2026:99215.

Plugin Details

Severity: Critical

ID: 379410

File Name: redhat-RHSA-2026-99215.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/12/2026

Updated: 11/12/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.6

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2026-120642

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:perl-cgi

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 11/12/2026

Vulnerability Publication Date: 11/3/2026

Reference Information

CVE: CVE-2026-120641, CVE-2026-120642, CVE-2026-120650

CWE: 22, 501, 770

RHSA: 2026:99215

Detections

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