CVE-2022-34749

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    CVE-2022-34749

    Published: 25 Jul 2022Last Modified: 12 Aug 2026

    Summary:

    Details: In mistune through 2.0.2, support of inline markup is implemented by using regular expressions that can involve a high amount of backtracking on certain edge cases. This behavior is commonly named catastrophic backtracking.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/34xxx/CVE-2022-34749.json, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TQHXITQ2DSBYOILKHXBSBB7PFBPZHF63/, https://nvd.nist.gov/vuln/detail/CVE-2022-34749, https://github.com/lepture/mistune/commit/a6d43215132fe4f3d93f8d7e90ba83b16a0838b2, https://github.com/lepture/mistune/releases

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -a6d43215132fe4f3d93f8d7e90ba83b16a0838b2

    Affected versions

    v2.0.2
    v2.0.1
    v2.0.0
    v2.0.0rc1
    v2.0.0a6
    v2.0.0a5
    v2.0.0a4
    v2.0.0a3
    v2.0.0a2
    v2.0.0a1

    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
    CVE-2022-34749 | CVE-DB