Detections
Analytics

Oracle Linux 8 : libsoup (ELSA-2026-84586)

high Nessus Plugin ID 367322

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-84586 advisory.

 - CVE-2026-102557 libsoup: libsoup: Heap buffer overflow during WebSocket message reassembly
 - CVE-2026-102558 libsoup: libsoup: Heap buffer overflow during WebSocket receive-buffer growth
 - CVE-2026-102556 libsoup: libsoup: Heap buffer overflow from WebSocket Pong signal type confusion

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

See Also

https://linux.oracle.com/errata/ELSA-2026-84586.html

Plugin Details

Severity: High

ID: 367322

File Name: oraclelinux_ELSA-2026-84586.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/19/2026

Updated: 10/19/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

Percentile: 96.19

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-102559

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: cpe:/o:oracle:linux:8, cpe:/o:oracle:linux:8:10:baseos_patch, p-cpe:/a:oracle:linux:libsoup-devel, p-cpe:/a:oracle:linux:libsoup

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/19/2026

Vulnerability Publication Date: 9/29/2026

Reference Information

CVE: CVE-2026-102556, CVE-2026-102557, CVE-2026-102558, CVE-2026-102559