GHSA-jr9p-r423-9m2r

    Dashboard / Vulnerabilities / GHSA-jr9p-r423-9m2r

    GHSA-jr9p-r423-9m2r

    Published: 2 Jun 2021Last Modified: 21 Feb 2025

    Summary: markdown2 Regular Expression Denial of Service

    Details: markdown2 >=1.0.1.18, fixed in 2.4.0, is affected by a regular expression denial of service vulnerability. If an attacker provides a malicious string, it can make markdown2 processing difficult or delayed for an extended period of time.

    References: https://nvd.nist.gov/vuln/detail/CVE-2021-26813, https://github.com/trentm/python-markdown2/pull/387, https://github.com/trentm/python-markdown2/commit/7b651260739647de5198323e0445b1618750c374, https://github.com/advisories/GHSA-jr9p-r423-9m2r, https://github.com/pypa/advisory-database/tree/main/vulns/markdown2/PYSEC-2021-20.yaml, https://github.com/trentm/python-markdown2, https://lists.fedoraproject.org/archives/list/[email protected]/message/BRP5RN35JZTSJ3JT4722F447ZDK7LZS5, https://lists.fedoraproject.org/archives/list/[email protected]/message/J752422YELXLMLZJPVJVKD2KKHHQRVEH, https://lists.fedoraproject.org/archives/list/[email protected]/message/JTIX5UXRDJZJ57DO4V33ZNJTNKWGBQLY

    Affected packages

    Package

    Name: markdown2

    Purl: pkg:pypi/markdown2

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 1.0.1.18
    Fixed -2.4.0

    Affected versions

    1.0.1.18
    1.0.1.19

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    GHSA-jr9p-r423-9m2r | CVE-DB