SUSE SLES12 Security Update : curl (SUSE-SU-2026:2703-1)

high Nessus Plugin ID 324850

Synopsis

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

Description

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2703-1 advisory.

This update for curl fixes the following issues

- CVE-2026-4873: connection reuse ignores TLS requirement (bsc#1262631).
- CVE-2026-5545: wrong reuse of HTTP Negotiate connection (bsc#1262632).
- CVE-2026-5773: wrong reuse of SMB connection (bsc#1262633).
- CVE-2026-6253: proxy credentials leak over redirect-to proxy (bsc#1262635).
- CVE-2026-6276: stale custom cookie host causes cookie leak (bsc#1262636).
- CVE-2026-6429: netrc credential leak with reused proxy connection (bsc#1262638).

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 curl, libcurl-devel, libcurl4 and / or libcurl4-32bit packages.

Plugin Details

Severity: High

ID: 324850

File Name: suse_SU-2026-2703-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 7/2/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.39

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-2026-5773

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/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:12, p-cpe:/a:novell:suse_linux:curl, p-cpe:/a:novell:suse_linux:libcurl4-32bit, p-cpe:/a:novell:suse_linux:libcurl-devel, p-cpe:/a:novell:suse_linux:libcurl4

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: 6/30/2026

Vulnerability Publication Date: 4/30/2026

Reference Information

CVE: CVE-2026-4873, CVE-2026-5545, CVE-2026-5773, CVE-2026-6253, CVE-2026-6276, CVE-2026-6429

IAVA: 2026-A-0397-S

SuSE: SUSE-SU-2026:2703-1

Detections

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