USN-7365-1

    Dashboard / Vulnerabilities / USN-7365-1

    USN-7365-1

    Published: 24 Mar 2025Last Modified: 25 Jun 2026

    Summary: nltk vulnerabilities

    Details: It was discovered that NLTK contained a regex that is susceptible to catastrophic backtracking. An attacker could possibly use this issue to cause a denial of service. (CVE-2021-3842, CVE-2021-43854)

    References: https://ubuntu.com/security/notices/USN-7365-1, https://ubuntu.com/security/CVE-2021-3842, https://ubuntu.com/security/CVE-2021-43854

    Affected packages

    Package

    Name: nltk

    Purl: pkg:deb/ubuntu/nltk?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.0~b9-0ubuntu4.1~esm4

    Affected versions

    2.0~b9-0ubuntu4
    2.0~b9-0ubuntu4.1~esm2

    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
    USN-7365-1 | CVE-DB