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 · Pygments +10 · Pygments +10

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...