{"cve":"CVE-2026-49299","nvd":{"published":"2026-05-28T22:17:02.093","modified":"2026-07-21T10:10:00.103","status":"Deferred","description":"In OpenStack Neutron before 28.0.1, the tagging controller enforces plural policy action names on single-tag write operations while the defined policy rules use singular names. The mismatched names evaluate as allowed under the default policy, permitting a project reader to create and update tags on same-project resources. Deployments running Neutron 26.0.0 or later are affected.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":5.3},"cvss_v3":null,"cwes":["CWE-863"],"references":["https://bugs.launchpad.net/bugs/2150132","https://review.opendev.org/c/openstack/neutron/+/989099","https://www.openwall.com/lists/oss-security/2026/05/28/8","http://www.openwall.com/lists/oss-security/2026/06/02/7"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-49299","score":0.00295,"percentile":0.22166,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-xv24-hxh9-2hh9","url":"https://osv.dev/vulnerability/GHSA-xv24-hxh9-2hh9","summary":"OpenStack Neutron has an Incorrect Authorization issue","modified":"2026-07-13T16:42:31.204793899Z","packages":[{"ecosystem":"PyPI","name":"neutron","purl":"pkg:pypi/neutron","ranges":[">=28.0.0 <28.0.1"],"fixed":["28.0.1"]},{"ecosystem":"PyPI","name":"neutron","purl":"pkg:pypi/neutron","ranges":[">=27.0.0 <27.0.3"],"fixed":["27.0.3"]},{"ecosystem":"PyPI","name":"neutron","purl":"pkg:pypi/neutron","ranges":[">=26.0.0 <26.0.4"],"fixed":["26.0.4"]}]},{"id":"PYSEC-2026-2678","url":"https://osv.dev/vulnerability/PYSEC-2026-2678","summary":"OpenStack Neutron has an Incorrect Authorization issue","modified":"2026-07-13T16:32:15.340156911Z","packages":[{"ecosystem":"PyPI","name":"neutron","purl":"pkg:pypi/neutron","ranges":[">=26.0.0 <26.0.4",">=27.0.0 <27.0.3",">=28.0.0 <28.0.1"],"fixed":["26.0.4","27.0.3","28.0.1"]}]}],"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."]}