Advisory Published

USN-4897-1: Pygments vulnerability

First published: Tue Mar 30 2021(Updated: )

Ben Caller discovered that Pygments incorrectly handled parsing certain files. If a user or automated system were tricked into parsing a specially crafted file, a remote attacker could cause Pygments to hang or consume resources, resulting in a denial of service.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/python3-pygments<2.3.1+dfsg-4ubuntu0.2
2.3.1+dfsg-4ubuntu0.2
Ubuntu Ubuntu=20.10
All of
ubuntu/python-pygments<2.3.1+dfsg-1ubuntu2.2
2.3.1+dfsg-1ubuntu2.2
Ubuntu Ubuntu=20.04
All of
ubuntu/python3-pygments<2.3.1+dfsg-1ubuntu2.2
2.3.1+dfsg-1ubuntu2.2
Ubuntu Ubuntu=20.04
All of
ubuntu/python-pygments<2.2.0+dfsg-1ubuntu0.2
2.2.0+dfsg-1ubuntu0.2
Ubuntu Ubuntu=18.04
All of
ubuntu/python3-pygments<2.2.0+dfsg-1ubuntu0.2
2.2.0+dfsg-1ubuntu0.2
Ubuntu Ubuntu=18.04
All of
ubuntu/python-pygments<2.1+dfsg-1ubuntu0.2
2.1+dfsg-1ubuntu0.2
Ubuntu Ubuntu=16.04
All of
ubuntu/python3-pygments<2.1+dfsg-1ubuntu0.2
2.1+dfsg-1ubuntu0.2
Ubuntu Ubuntu=16.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this Pygments vulnerability?

    The vulnerability ID for this Pygments vulnerability is CVE-2021-27291.

  • What is the impact of the Pygments vulnerability?

    The Pygments vulnerability can result in a denial of service by causing Pygments to hang or consume excessive resources.

  • Which versions of Python-Pygments are affected by this vulnerability?

    The versions affected by this vulnerability are python-pygments version 2.3.1+dfsg-1ubuntu2.2, python-pygments version 2.2.0+dfsg-1ubuntu0.2, and python-pygments version 2.1+dfsg-1ubuntu0.2.

  • Which versions of Python3-Pygments are affected by this vulnerability?

    The versions affected by this vulnerability are python3-pygments version 2.3.1+dfsg-4ubuntu0.2, python3-pygments version 2.3.1+dfsg-1ubuntu2.2, python3-pygments version 2.2.0+dfsg-1ubuntu0.2, and python3-pygments version 2.1+dfsg-1ubuntu0.2.

  • How do I fix the Pygments vulnerability?

    To fix the Pygments vulnerability, update to the appropriate fixed versions: python-pygments version 2.3.1+dfsg-1ubuntu2.2, python-pygments version 2.2.0+dfsg-1ubuntu0.2, python-pygments version 2.1+dfsg-1ubuntu0.2, python3-pygments version 2.3.1+dfsg-4ubuntu0.2, python3-pygments version 2.3.1+dfsg-1ubuntu2.2, python3-pygments version 2.2.0+dfsg-1ubuntu0.2, or python3-pygments version 2.1+dfsg-1ubuntu0.2.

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