Detections
Analytics

SCA: security update for lxml (GHSA-55x5-fj6c-h6m8)

medium Tenable Self-Hosted Container Security Plugin ID 410605

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - lxml is a library for processing XML and HTML in the Python language. Prior to version 4.6.5, the HTML
 Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG
 files embedded using data URIs. Users that employ the HTML cleaner in a security relevant context should
 upgrade to lxml 4.6.5 to receive a patch. There are no known workarounds available. (CVE-2021-43818)

See Also

https://github.com/advisories/GHSA-55x5-fj6c-h6m8

Plugin Details

Severity: Medium

ID: 410605

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.1

Percentile: 96.37

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2021-43818

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 2.3

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 12/13/2021

Vulnerability Publication Date: 12/13/2021

Reference Information

CVE: CVE-2021-43818