QID 239836

Date Published: 2021-11-10

QID 239836: Red Hat Update for python-lxml (RHSA-2021:4158)

lxml is an xml processing library providing access to libxml2 and libxslt libraries using the python elementtree api.

Security Fix(es):
  • python-lxml: missing input sanitization for formaction html5 attributes may lead to xss (cve-2021-28957)

Affected Products:

  • Red Hat enterprise linux for x86_64 8 x86_64
  • Red Hat enterprise linux for ibm z systems 8 s390x
  • Red Hat enterprise linux for power, little endian 8 ppc64le
  • Red Hat enterprise linux for arm 64 8 aarch64



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

On successful exploitation, it could allow an attacker to execute code.

  • CVSS V3 rated as High - 6.1 severity.
  • CVSS V2 rated as Medium - 4.3 severity.
    • Solution
    Upgrade to the latest packages which contain a patch.

    Refer to Refer to :
    Applying Package Updates to RHEL system     for details.

    Refer to Red Hat security advisory RHSA-2021:4158 Update to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239836

    CVE-2021-28957 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:4158 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:4158
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