SUSE SLED15: libsoup-2_4-1 / libsoup2-devel / libsoup2-lang / etc (SUSE-SU-2026:4703-1)

critical Nessus Plugin ID 366743

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-2026:4703-1 advisory.

- CVE-2026-12547: Header 'Proxy-Authorization' leads to credentials being send to different proxy after proxy switch (bsc#1272195).
- CVE-2026-15711: SoupWebsocketConnection: WebSocket remote denial of service via oversized control frame protocol violation (bsc#1271446).
- CVE-2026-15713: SoupCache: libsoup: HTTP/2 frame window exhaustion remote denial of service via memory leak (bsc#1271448).
- CVE-2026-15714: SoupMultipartInputStream: libsoup: Out-of-bounds read in soup_multipart_input_stream_read_headers via an oversized multipart boundary string (bsc#1271449).
- CVE-2026-66339: proxy credentials leak to destination server via `Proxy-Authorization` header in CONNECT tunnels (bsc#1273156).
- CVE-2026-77014: Integer truncation in sort_ranges() comparator causes silent omission of HTTP Range responses (bsc#1275988).
- CVE-2026-77680: quadratic CPU denial of service in HTTP Range coalescing after the CVE-2025-32907 fix (bsc#1276759).
- 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).
- CVE-2026-103399: incomplete request body draining in HTTP/1.x early responses can allow HTTP request smuggling (bsc#1283831).

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-2_4-1, libsoup2-devel, libsoup2-lang and / or typelib-1_0-Soup-2_4 packages.

Plugin Details

Severity: Critical

ID: 366743

File Name: suse_SU-2026-4703-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 10/17/2026

Updated: 10/17/2026

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: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2026-102560

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:libsoup-2_4-1, p-cpe:/a:novell:suse_linux:libsoup2-devel, p-cpe:/a:novell:suse_linux:libsoup2-lang, p-cpe:/a:novell:suse_linux:typelib-1_0-soup-2_4

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: 10/16/2026

Vulnerability Publication Date: 4/23/2026

Reference Information

CVE: CVE-2026-102556, CVE-2026-102557, CVE-2026-102558, CVE-2026-102559, CVE-2026-102560, CVE-2026-103399, CVE-2026-12547, CVE-2026-12548, CVE-2026-15711, CVE-2026-15713, CVE-2026-15714, CVE-2026-2708, CVE-2026-66339, CVE-2026-77014, CVE-2026-77680

SuSE: SUSE-SU-2026:4703-1

Detections

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