Detections
Analytics

Oracle Linux 10 : expat (ELSA-2026-88248)

high Nessus Plugin ID 370888

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-88248 advisory.

 - CVE-2026-102633 expat: expat: Denial of Service via integer overflow in expat_realloc
 - CVE-2026-77214 expat: expat: Information disclosure via heap buffer over- read in XML_ParseBuffer
 - CVE-2026-66046 expat: Expat: Denial of Service via quadratic complexity in attribute processing
 - CVE-2026-93990 expat: Expat: XML Injection via Malformed UTF-16 Input
 - Fix CVE-2026-56132: out-of-bound scaffolding index store in doProlog
 - Fix CVE-2026-50219: forbid XML_ParserFree/Reset from handlers
 - expat: backport CVE-2026-45186 fix (attribute collision check DoS)

Tenable has extracted the preceding description block directly from the Oracle Linux 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 and / or expat-devel packages.

See Also

https://linux.oracle.com/errata/ELSA-2026-88248.html

Plugin Details

Severity: High

ID: 370888

File Name: oraclelinux_ELSA-2026-88248.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/22/2026

Updated: 10/22/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 51.52

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4

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

CVSS Score Source: CVE-2026-102633

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

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

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

CVSS Score Source: CVE-2026-77214

CVSS v4

Risk Factor: High

Base Score: 8.3

Threat Score: 4.8

Threat Vector: CVSS:4.0/E:U

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

CVSS Score Source: CVE-2026-77214

Vulnerability Information

CPE: cpe:/o:oracle:linux:10, cpe:/o:oracle:linux:10:2:baseos_patch, p-cpe:/a:oracle:linux:expat-devel, p-cpe:/a:oracle:linux:expat

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Ease: No known exploits are available

Patch Publication Date: 10/22/2026

Vulnerability Publication Date: 9/29/2026

Reference Information

CVE: CVE-2026-102633, CVE-2026-77214

IAVA: 2026-A-1100