PYSEC-2021-330

    Dashboard / Vulnerabilities / PYSEC-2021-330

    PYSEC-2021-330

    Published: 10 Sept 2021Last Modified: 9 Jul 2026

    Summary:

    Details: Due to use of unsafe YAML deserialization logic, an attacker with the ability to modify local YAML configuration files could provide malicious input, resulting in remote code execution or similar risks. This issue affects ParlAI prior to v1.1.0.

    References: https://github.com/facebookresearch/ParlAI/releases/tag/v1.1.0, http://packetstormsecurity.com/files/164136/Facebook-ParlAI-1.0.0-Code-Execution-Deserialization.html, https://github.com/advisories/GHSA-mwgj-7x7j-6966

    Affected packages

    Package

    Name: parlai

    Purl: pkg:pypi/parlai

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.1.0

    Affected versions

    0.1.20200409
    0.1.20200416
    0.1.20200610
    0.1.20200713
    0.1.20200716

    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
    PYSEC-2021-330 | CVE-DB