Cross-site Scripting (XSS) Affecting python-docs package, versions <0:2.7.16-2.module+el8.4.0+403+9ae17a31


Severity

Recommended
0.0
medium
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.23% (63rd percentile)

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  • Snyk IDSNYK-ROCKY8-PYTHONDOCS-3202622
  • published5 Jan 2023
  • disclosed21 Mar 2021

Introduced: 21 Mar 2021

CVE-2021-28957  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 python-docs to version 0:2.7.16-2.module+el8.4.0+403+9ae17a31 or higher.
This issue was patched in RLSA-2021:4151.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-docs package and not the python-docs package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

An XSS vulnerability was discovered in python-lxml's clean module versions before 4.6.3. When disabling the safe_attrs_only and forms arguments, the Cleaner class does not remove the formaction attribute allowing for JS to bypass the sanitizer. A remote attacker could exploit this flaw to run arbitrary JS code on users who interact with incorrectly sanitized HTML. This issue is patched in lxml 4.6.3.

CVSS Scores

version 3.1