AlmaLinux 8 : libsoup (ALSA-2026:0421)

high Nessus Plugin ID 291530

Synopsis

The remote AlmaLinux host is missing a security update.

Description

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:0421 advisory.

* libsoup: libsoup: Duplicate Host Header Handling Causes Host-Parsing Discrepancy (First- vs Last-Value Wins) (CVE-2025-14523)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 libsoup and / or libsoup-devel packages.

See Also

https://errata.almalinux.org/8/ALSA-2026-0421.html

https://access.redhat.com/errata/RHSA-2026:0421

Plugin Details

Severity: High

ID: 291530

File Name: alma_linux_ALSA-2026-0421.nasl

Version: 1.1

Type: local

Published: 1/19/2026

Updated: 1/19/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.0

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

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

CVSS Score Source: CVE-2025-14523

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: cpe:/o:alma:linux:8::sap_hana, cpe:/o:alma:linux:8::nfv, cpe:/o:alma:linux:8::highavailability, cpe:/o:alma:linux:8::powertools, cpe:/o:alma:linux:8::realtime, cpe:/o:alma:linux:8::resilientstorage, p-cpe:/a:alma:linux:libsoup-devel, cpe:/o:alma:linux:8, p-cpe:/a:alma:linux:libsoup, cpe:/o:alma:linux:8::baseos, cpe:/o:alma:linux:8::sap, cpe:/o:alma:linux:8::appstream, cpe:/o:alma:linux:8::supplementary

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/12/2026

Vulnerability Publication Date: 12/11/2025

Reference Information

CVE: CVE-2025-14523

CWE: 444

RHSA: 2026:0421