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Fedora 43 : perl-CGI (2026-a3a026d9ff)

critical Nessus Plugin ID 378037

Synopsis

The remote Fedora host is missing one or more security updates.

Description

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-a3a026d9ff advisory.

 5.02 bump
 - Fix CVE-2026-120631 (CGI::Cookie->parse backtracking DoS via cookie expires regex)
 - Fix CVE-2026-120632 (cubic regex backtracking via crafted multipart/related Content-Type)
 - Fix CVE-2026-120650 (missing/unenforced request size, param and upload limits)
 - Fix CVE-2026-120651 (infinite loop reading short PUT/POST/PATCH body with DISABLE_UPLOADS)
 - Fix CVE-2026-120645 (scrolling_list used submitted values as regex for optgroups)
 - Fix CVE-2026-120646 (uploadInfo() dereferenced plain strings as symbolic references)
 - Fix CVE-2026-120639 (header injection via HTML entity decoding in header() extra values)
 - Fix CVE-2026-120644 (CGI::Cookie path/domain/expires not checked; ; injected attributes)
 - Fix CVE-2026-120647 (header() -attachment filename did not escape quotes)
 - Fix CVE-2026-120633 (url()/virtual_host() trusted client-supplied X-Forwarded-Host)
 - Fix CVE-2026-120638 (redirect() HTML-decoded URL after app checked it)
 - Fix CVE-2026-120636 (REQUEST_URI could produce protocol-relative or javascript: URLs)
 - Fix CVE-2026-120643 (url()/self_url() could contain raw single quote via URI->canonical)
 - Fix CVE-2026-120648 (comment() text could end HTML comment)
 - Fix CVE-2026-120634 (CGI::Carp warnings leaked between requests in persistent envs)
 - Fix CVE-2026-120635 (multipart parsing differentials; boundary smuggling)
 - Fix CVE-2026-120641 (upload filenames could contain path; path traversal risk)
 - Fix CVE-2026-120640 (POSTDATA/PUTDATA settable via query string/form field)
 - Fix CVE-2026-120642 (taint mode bypass for upload filename and other values)
 - Fix CVE-2026-120637 (unrecognised REQUEST_METHOD made argv the request params)

Tenable has extracted the preceding description block directly from the Fedora 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 affected perl-CGI package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2026-a3a026d9ff

Plugin Details

Severity: Critical

ID: 378037

File Name: fedora_2026-a3a026d9ff.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 11/10/2026

Updated: 11/10/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.6

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-120647

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: cpe:/o:fedoraproject:fedora:43, p-cpe:/a:fedoraproject:fedora:perl-cgi

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/4/2026

Vulnerability Publication Date: 11/3/2026

Reference Information

CVE: CVE-2026-120631, CVE-2026-120632, CVE-2026-120633, CVE-2026-120634, CVE-2026-120635, CVE-2026-120636, CVE-2026-120637, CVE-2026-120638, CVE-2026-120639, CVE-2026-120640, CVE-2026-120641, CVE-2026-120642, CVE-2026-120643, CVE-2026-120644, CVE-2026-120645, CVE-2026-120646, CVE-2026-120647, CVE-2026-120648, CVE-2026-120650, CVE-2026-120651