PYSEC-2026-1450

    Dashboard / Vulnerabilities / PYSEC-2026-1450

    PYSEC-2026-1450

    Published: 7 Jul 2026Last Modified: 7 Jul 2026

    Summary: hnswlib Double Free vulnerability

    Details: Hnswlib 0.7.0 has a double free in `init_index` when the M argument is a large integer.

    References: https://nvd.nist.gov/vuln/detail/CVE-2023-37365, https://github.com/nmslib/hnswlib/issues/467, https://github.com/nmslib/hnswlib/pull/484, https://github.com/nmslib/hnswlib/commit/f6d170ce0b41f9e75ace473b09df6e7872590757, https://github.com/nmslib/hnswlib, https://pypi.org/project/hnswlib, https://github.com/advisories/GHSA-xwc8-rf6m-xr86

    Affected packages

    Package

    Name: hnswlib

    Purl: pkg:pypi/hnswlib

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.8.0

    Affected versions

    0.3.2.0
    0.3.4

    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-2026-1450 | CVE-DB