{"cve":"CVE-2015-7546","nvd":{"published":"2016-02-03T18:59:04.853","modified":"2026-06-17T00:32:43.293","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.5},"cwes":["CWE-522"],"references":["http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html","http://www.securityfocus.com/bid/80498","https://bugs.launchpad.net/keystone/+bug/1490804","https://security.openstack.org/ossa/OSSA-2016-005.html","https://wiki.openstack.org/wiki/OSSN/OSSN-0062"],"products":["openstack:keystone","openstack:keystonemiddleware","oracle:solaris"],"source":"nvd","synced_at":"2026-10-19T20:37:48.328043465+00:00"},"epss":{"cve":"CVE-2015-7546","score":0.01997,"percentile":0.80732,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-8c4w-v65p-jvcv","url":"https://osv.dev/vulnerability/GHSA-8c4w-v65p-jvcv","summary":"OpenStack Identity Keystone and keystonemiddleware Insufficiently Protected Credentials","modified":"2026-07-13T16:42:52.889269796Z","packages":[{"ecosystem":"PyPI","name":"keystone","purl":"pkg:pypi/keystone","ranges":[">=9.0.0.0b1 <9.0.0.0b2"],"fixed":["9.0.0.0b2"]},{"ecosystem":"PyPI","name":"keystonemiddleware","purl":"pkg:pypi/keystonemiddleware","ranges":[">=2.4.0 <4.1.0"],"fixed":["4.1.0"]},{"ecosystem":"PyPI","name":"keystone","purl":"pkg:pypi/keystone","ranges":[">=8.0 <8.1.0"],"fixed":["8.1.0"]},{"ecosystem":"PyPI","name":"keystonemiddleware","purl":"pkg:pypi/keystonemiddleware","ranges":["<1.5.4"],"fixed":["1.5.4"]},{"ecosystem":"PyPI","name":"keystonemiddleware","purl":"pkg:pypi/keystonemiddleware","ranges":[">=1.6.0 <2.3.3"],"fixed":["2.3.3"]}]},{"id":"PYSEC-2016-20","url":"https://osv.dev/vulnerability/PYSEC-2016-20","summary":"","modified":"2026-07-13T16:42:52.889269796Z","packages":[{"ecosystem":"PyPI","name":"keystonemiddleware","purl":"pkg:pypi/keystonemiddleware","ranges":["<1.5.4",">=1.6.0 <2.3.3"],"fixed":["1.5.4","2.3.3"]}]},{"id":"PYSEC-2026-2549","url":"https://osv.dev/vulnerability/PYSEC-2026-2549","summary":"OpenStack Identity Keystone and keystonemiddleware Insufficiently Protected Credentials","modified":"2026-07-13T16:42:52.889269796Z","packages":[{"ecosystem":"PyPI","name":"keystone","purl":"pkg:pypi/keystone","ranges":[">=8.0 <8.1.0",">=9.0.0.0b1 <9.0.0.0b2"],"fixed":["8.1.0","9.0.0.0b2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}