{"id":"CVE-2026-43002","title":"An issue was discovered in OpenStack Horizon 25.6 and 25.7 before 25.7.3","summary":"An issue was discovered in OpenStack Horizon 25.6 and 25.7 before 25.7.3. There is a write operation to the session storage backend before authentication and thus storage can be exhausted by unauthenticated requests. This is a regression…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-696"],"vendor":"openstack","product":"horizon","affected":["horizon >= 25.6.0, < 25.7.3"],"patched":["horizon 25.7.3"],"published":"2026-05-05","updated":"2026-09-10","sourceUpdated":"2026-09-10T21:22:48.593","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-43002","references":[{"url":"https://bugs.launchpad.net/horizon/+bug/2150331","label":"cve@mitre.org"},{"url":"https://security.openstack.org/ossa/OSSA-2026-009.html","label":"cve@mitre.org"},{"url":"https://www.openwall.com/lists/oss-security/2026/05/05/7","label":"cve@mitre.org"},{"url":"https://bugs.launchpad.net/horizon/+bug/2150331","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43002"},{"url":"https://github.com/openstack/horizon"}],"tags":["nvd","osv","pip"],"epss":0.00361,"epssPercentile":0.29802,"aliases":["GHSA-vxvf-xvm3-p8j5","PYSEC-2026-2520"],"ecosystem":"pip","ingestedAt":"2026-07-13T18:58:03.939Z","slug":"CVE-2026-43002","body":"## Overview\n\nAn issue was discovered in OpenStack Horizon 25.6 and 25.7 before 25.7.3. There is a write operation to the session storage backend before authentication and thus storage can be exhausted by unauthenticated requests. This is a regression of the CVE-2014-8124 fix.\n\n## Affected\n\n- `horizon >= 25.6.0, < 25.7.3`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `horizon 25.7.3`\n\n## Package advisory (CVE-2026-43002)\n\nAffected packages:\n\n- `horizon >= 25.6, < 25.7.3`\n\nPatched in:\n\n- `horizon 25.7.3`\n\nSource: https://osv.dev/vulnerability/GHSA-vxvf-xvm3-p8j5","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}