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openSUSE 16 Security Update : expat (openSUSE-SU-2026:22177-1)

high Nessus Plugin ID 374770

Synopsis

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

Description

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:22177-1 advisory.

 - CVE-2026-77214: out-of-bounds read due to insufficient checks in `XML_ParseBuffer()` (bsc#1284334).
 - CVE-2026-93990: fails to validate low surrogates following high surrogates in UTF-16 input (bsc#1282347).
 - CVE-2026-102633: denial of service via integer overflow in expat_realloc (bsc#1283493).

 Changes for expat:

 Update to 2.8.5 (jsc#PED-16154):

 * Bug fixes:
 * Fix an OOM-related memory leak on a failed overflow check
 * Fix memory alignment for architectures with 128bit pointers
 * Mark XML_SetHashSalt deprecated

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 expat, libexpat-devel and / or libexpat1 packages.

See Also

https://bugzilla.suse.com/1275115

https://bugzilla.suse.com/1282347

https://bugzilla.suse.com/1283493

https://bugzilla.suse.com/1284334

https://www.suse.com/security/cve/CVE-2026-102633

https://www.suse.com/security/cve/CVE-2026-32776

https://www.suse.com/security/cve/CVE-2026-32777

https://www.suse.com/security/cve/CVE-2026-32778

https://www.suse.com/security/cve/CVE-2026-56403

https://www.suse.com/security/cve/CVE-2026-56404

https://www.suse.com/security/cve/CVE-2026-56405

https://www.suse.com/security/cve/CVE-2026-77214

https://www.suse.com/security/cve/CVE-2026-93990

Plugin Details

Severity: High

ID: 374770

File Name: openSUSE-2026-22177-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 11/1/2026

Updated: 11/1/2026

Supported Sensors: 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: 94.33

CVSS v2

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 4.6

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

CVSS Score Source: CVE-2026-56405

CVSS v3

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 6.2

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

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 7.7

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2026-93990

Vulnerability Information

CPE: cpe:/o:novell:opensuse:16.0, p-cpe:/a:novell:opensuse:expat, p-cpe:/a:novell:opensuse:libexpat-devel, p-cpe:/a:novell:opensuse:libexpat1

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: 10/27/2026

Vulnerability Publication Date: 3/16/2026

Reference Information

CVE: CVE-2026-102633, CVE-2026-32776, CVE-2026-32777, CVE-2026-32778, CVE-2026-56403, CVE-2026-56404, CVE-2026-56405, CVE-2026-77214, CVE-2026-93990

IAVA: 2026-A-0650-S, 2026-A-1045, 2026-A-1100