PYSEC-2026-2549

    Dashboard / Vulnerabilities / PYSEC-2026-2549

    PYSEC-2026-2549

    Published: 9 Jul 2026Last Modified: 13 Jul 2026

    Summary: OpenStack Identity Keystone and keystonemiddleware Insufficiently Protected Credentials

    Details: The identity service in OpenStack Identity (Keystone) before 2015.1.3 (Kilo) and 8.0.x before 8.0.2 (Liberty) and keystonemiddleware (formerly python-keystoneclient) before 1.5.4 (Kilo) and Liberty before 2.3.3 does not properly invalidate authorization tokens when using the PKI or PKIZ token providers, which allows remote authenticated users to bypass intended access restrictions and gain access to cloud resources by manipulating byte fields within a revoked token.

    References: https://nvd.nist.gov/vuln/detail/CVE-2015-7546, https://github.com/openstack/keystone/commit/bff03b5726fe5cac93d44a66715eea49b89c8cb0, https://github.com/openstack/keystone/commit/d5378f173da14a34ca010271477337879002d6d0, https://github.com/openstack/keystonemiddleware/commit/96ab58e6863c92575ada57615b19652e502adfd8, https://bugs.launchpad.net/keystone/+bug/1490804, https://github.com/pypa/advisory-database/tree/main/vulns/keystonemiddleware/PYSEC-2016-20.yaml, https://security.openstack.org/ossa/OSSA-2016-005.html, https://web.archive.org/web/20200228002640/http://www.securityfocus.com/bid/80498, https://wiki.openstack.org/wiki/OSSN/OSSN-0062, http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html, https://pypi.org/project/keystone, https://github.com/advisories/GHSA-8c4w-v65p-jvcv

    Affected packages

    Package

    Name: keystone

    Purl: pkg:pypi/keystone

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 8.0
    Fixed -8.1.0

    Affected versions

    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