CVE-2021-20270

An infinite loop in SMLLexer in Pygments versions 1.5 to 2.7.3 may lead to denial of service when performing syntax highlighting of a Standard ML (SML) source file, as demonstrated by input that only contains the "exception" keyword.

In OpenShift Container Platform 3.11, the vulnerable version of python-pygments is embedded in the google-cloud-sdk package, which is shipped in the openshift-ansible container (aos3-installation-container). As the access to the openshift-ansible container is restricted only to cluster administrators, this component is affected but with a Low impact. The google-cloud-sdk package was shipped in OpenShift Container Platform 4.1, which is End of Life.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.