Detections
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Fedora 43 : perl-libwww-perl (2026-3b48ba7dc7)

medium Nessus Plugin ID 318762

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 a vulnerability as referenced in the FEDORA-2026-3b48ba7dc7 advisory.

 Changes:

 6.83 2026-05-12 11:41:48Z

 - LWP::UserAgent now strips Authorization and Proxy-Authorization headers on cross-origin redirects (a different scheme, host, or port) to prevent credential leakage to the redirect target. Same-origin redirects retain credentials. Opt out with allow_credentialed_redirects => 1.
 CVE-2026-8368 reported by Kai Zen; PoC and initial patch by Stig Palmquist.
 - LWP::UserAgent now refuses https to http redirects by default to prevent leaking remaining request headers and bodies over plaintext. Opt in with allow_downgrade => 1. Related hardening alongside CVE-2026-8368; PoC by Stig Palmquist.

Tenable has extracted the preceding description block directly from the Fedora security advisory.

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

Solution

Update the affected perl-libwww-perl package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2026-3b48ba7dc7

Plugin Details

Severity: Medium

ID: 318762

File Name: fedora_2026-3b48ba7dc7.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/5/2026

Updated: 6/5/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-8368

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/20/2026

Vulnerability Publication Date: 5/12/2026

Reference Information

CVE: CVE-2026-8368