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Linux Distros Unpatched Vulnerability : CVE-2026-7210

medium Nessus Plugin ID 314657

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - `xml.parsers.expat` and `xml.etree.ElementTree` use insufficient entropy for Expat hash-flooding protection, which allows a crafted XML document to trigger hash flooding.\r\n\r\nFully mitigating this vulnerability requires both updating libexpat to 2.8.0 or later and applying this patch. (CVE-2026-7210)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://security-tracker.debian.org/tracker/CVE-2026-7210

https://ubuntu.com/security/CVE-2026-7210

Plugin Details

Severity: Medium

ID: 314657

File Name: unpatched_CVE_2026_7210.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 5/14/2026

Updated: 5/14/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.9

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

CVSS Score Source: CVE-2026-7210

CVSS v3

Risk Factor: High

Base Score: 7.3

Temporal Score: 6.7

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:canonical:ubuntu_linux:python3.5, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:python3.13, p-cpe:/a:debian:debian_linux:pypy3, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:debian:debian_linux:python2.7, p-cpe:/a:debian:debian_linux:python3.14, p-cpe:/a:canonical:ubuntu_linux:python3.4, p-cpe:/a:canonical:ubuntu_linux:python3.10, p-cpe:/a:canonical:ubuntu_linux:python3.14, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:canonical:ubuntu_linux:python3.12, cpe:/o:canonical:ubuntu_linux:25.10, p-cpe:/a:debian:debian_linux:python3.9, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:python3.6, p-cpe:/a:canonical:ubuntu_linux:python3.9, cpe:/o:debian:debian_linux:13.0, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:python3.11, p-cpe:/a:debian:debian_linux:python3.11, p-cpe:/a:canonical:ubuntu_linux:python2.7, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:python3.8, cpe:/o:canonical:ubuntu_linux:26.04, p-cpe:/a:debian:debian_linux:python3.13, p-cpe:/a:canonical:ubuntu_linux:python3.7, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:debian:debian_linux:14.0

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 5/11/2026

Reference Information

CVE: CVE-2026-7210