{"cve":"CVE-2026-43001","nvd":{"published":"2026-05-01T09:16:17.273","modified":"2026-10-26T21:10:00.170","status":"Modified","description":"An issue was discovered in OpenStack Keystone before 29.0.2. POST /v3/credentials did not validate that the caller-supplied project_id for an EC2-type credential matched the project of the authenticating application credential. This allowed an attacker holding an unrestricted application credential for project A to create an EC2 credential targeting project B; a subsequent /v3/ec2tokens exchange would then issue a Keystone token scoped to project B while still carrying the original app_cred_id, enabling cross-project lateral movement within the credential owner's role footprint.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","score":8.0},"cwes":["CWE-863","CWE-1288"],"references":["https://bugs.launchpad.net/keystone/+bug/2149775","https://review.opendev.org/c/openstack/keystone/+/985804","https://security.openstack.org/ossa/OSSA-2026-015.html","https://access.redhat.com/errata/RHSA-2026:39808","https://access.redhat.com/errata/RHSA-2026:54757"],"products":["openstack:keystone"],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-43001","score":0.00466,"percentile":0.40117,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-hhq2-3832-xxcv","url":"https://osv.dev/vulnerability/GHSA-hhq2-3832-xxcv","summary":"OpenStack Keystone has an Incorrect Authorization Issue","modified":"2026-09-10T03:51:05.850524592Z","packages":[{"ecosystem":"PyPI","name":"keystone","purl":"pkg:pypi/keystone","ranges":[">=13.0.0 <=29.0.1"],"fixed":[]}]},{"id":"PYSEC-2026-602","url":"https://osv.dev/vulnerability/PYSEC-2026-602","summary":"","modified":"2026-07-13T16:45:08.056624637Z","packages":[{"ecosystem":"PyPI","name":"keystone","purl":"pkg:pypi/keystone","ranges":[">=14.0.0 <27.0.2",">=28.0.0 <28.0.2",">=29.0.0 <29.0.2"],"fixed":["27.0.2","28.0.2","29.0.2"]}]}],"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."]}