{"cve":"CVE-2013-4477","nvd":{"published":"2013-11-02T19:55:04.773","modified":"2026-06-16T23:57:17.987","status":"Modified","description":"The LDAP backend in OpenStack Identity (Keystone) Grizzly and Havana, when removing a role on a tenant for a user who does not have that role, adds the role to the user, which allows local users to gain privileges.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-264"],"references":["http://rhn.redhat.com/errata/RHSA-2014-0113.html","http://www.openwall.com/lists/oss-security/2013/10/30/6","http://www.ubuntu.com/usn/USN-2034-1","https://bugs.launchpad.net/keystone/+bug/1242855","http://rhn.redhat.com/errata/RHSA-2014-0113.html"],"products":["openstack:grizzly","openstack:havana"],"source":"nvd","synced_at":"2026-10-19T20:30:15.895642412+00:00"},"epss":{"cve":"CVE-2013-4477","score":0.00447,"percentile":0.38928,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-f889-wfwm-6p7m","url":"https://osv.dev/vulnerability/GHSA-f889-wfwm-6p7m","summary":"OpenStack Identity Keystone Privilege Escalation vulnerability","modified":"2026-07-07T11:56:26.840865610Z","packages":[{"ecosystem":"PyPI","name":"keystone","purl":"pkg:pypi/keystone","ranges":["<8.0.0a0"],"fixed":["8.0.0a0"]}]},{"id":"PYSEC-2026-831","url":"https://osv.dev/vulnerability/PYSEC-2026-831","summary":"OpenStack Identity Keystone Privilege Escalation vulnerability","modified":"2026-07-07T11:45:41.932348410Z","packages":[{"ecosystem":"PyPI","name":"keystone","purl":"pkg:pypi/keystone","ranges":["<8.0.0a0"],"fixed":["8.0.0a0"]}]}],"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."]}