SUSE SLED15 / SLES15 Security Update : libsoup (SUSE-SU-2026:4558-1)

medium Nessus Plugin ID 364125

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-2026:4558-1 advisory.

- CVE-2026-12478: websocket: Fix out-of-bounds read when reading unmasked frame (bsc#1271401).
- 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-2026-15712: SoupClientMessageIOHTTP2: HTTP/2 GOAWAY frame parsing heap buffer over-read via invalid NUL- termination assumption (bsc#1271447).
- 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).

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.

Plugin Details

Severity: Medium

ID: 364125

File Name: suse_SU-2026-4558-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 10/8/2026

Updated: 10/8/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.61

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2026-66339

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/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: 10/7/2026

Vulnerability Publication Date: 7/14/2026

Reference Information

CVE: CVE-2026-12478, CVE-2026-12547, CVE-2026-15711, CVE-2026-15712, CVE-2026-15714, CVE-2026-66339

SuSE: SUSE-SU-2026:4558-1

Detections

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