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.

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AZL-35137 CVE-2021-20270 affecting package python-pygments for versions less than 2.7.4-1

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...

PT-2020-6145

Name of the Vulnerable Software and Affected Versions Pygments versions 1.5 to 2.7.3 Description The issue is related to an infinite loop in the SMLLexer function of the Pygments library. This can lead to a denial of service when performing syntax highlighting of a Standard ML SML source file. Th...