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SUSE SLED15 / SLES15 Security Update : libsoup (SUSE-SU-2026:4631-1)

medium Nessus Plugin ID 365316

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Synopsis

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

Description

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4631-1 advisory.

 - CVE-2026-15713: SoupCache: libsoup: HTTP/2 frame window exhaustion remote denial of service via memory leak (bsc#1271448).
 - CVE-2026-102555: Heap buffer overflow via uninitialized length in data-URI base64 decoding (bsc#1283299).
 - CVE-2026-102556: Heap buffer overflow from WebSocket Pong signal type confusion (bsc#1283300).
 - CVE-2026-102557: Heap buffer overflow during WebSocket message reassembly (bsc#1283301).
 - CVE-2026-102558: Heap buffer overflow during WebSocket receive-buffer growth (bsc#1283302).
 - CVE-2026-102559: Heap buffer overflow during WebSocket client-frame masking (bsc#1283303).
 - CVE-2026-102560: Heap buffer overflow during outgoing permessage-deflate buffer growth (bsc#1283304).

Tenable has extracted the preceding description block directly from the SUSE 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-3_0-0, libsoup-devel, libsoup-lang and / or typelib-1_0-Soup-3_0 packages.

See Also

https://bugzilla.suse.com/1271448

https://bugzilla.suse.com/1283299

https://bugzilla.suse.com/1283300

https://bugzilla.suse.com/1283301

https://bugzilla.suse.com/1283302

https://bugzilla.suse.com/1283303

https://bugzilla.suse.com/1283304

https://www.suse.com/security/cve/CVE-2026-102555

https://www.suse.com/security/cve/CVE-2026-102556

https://www.suse.com/security/cve/CVE-2026-102557

https://www.suse.com/security/cve/CVE-2026-102558

https://www.suse.com/security/cve/CVE-2026-102559

https://www.suse.com/security/cve/CVE-2026-102560

https://www.suse.com/security/cve/CVE-2026-12548

https://www.suse.com/security/cve/CVE-2026-15713

https://www.suse.com/security/cve/CVE-2026-2708

http://www.nessus.org/u?9a02011f

Plugin Details

Severity: Medium

ID: 365316

File Name: suse_SU-2026-4631-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/13/2026

Updated: 10/13/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, 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: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2026-2708

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:libsoup-3_0-0, p-cpe:/a:novell:suse_linux:libsoup-devel, p-cpe:/a:novell:suse_linux:libsoup-lang, p-cpe:/a:novell:suse_linux:typelib-1_0-soup-3_0

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/12/2026

Vulnerability Publication Date: 4/23/2026

Reference Information

CVE: CVE-2026-102555, CVE-2026-102556, CVE-2026-102557, CVE-2026-102558, CVE-2026-102559, CVE-2026-102560, CVE-2026-12548, CVE-2026-15713, CVE-2026-2708

SuSE: SUSE-SU-2026:4631-1