{"id":"CVE-2026-94572","title":"In OpenStack Octavia before 18.0.1, the Amphora provider driver did not validate the listener and pool tls_ciphers field for control characters","summary":"In OpenStack Octavia before 18.0.1, the Amphora provider driver did not validate the listener and pool tls_ciphers field for control characters. The value is written verbatim into the HAProxy configuration generated on the amphora, and t…","severity":"critical","cvss":9.4,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","cwe":["CWE-94"],"vendor":"OpenStack","product":"Octavia","affected":["Octavia >= 6.0.0 < 16.1.0","Octavia >= 17.0.0 < 17.0.1","Octavia >= 18.0.0 < 18.0.1"],"published":"2026-09-21","updated":"2026-09-22","sourceUpdated":"2026-09-22T19:56:19.073","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-94572","references":[{"url":"https://bugs.debian.org/1148175","label":"cve@mitre.org"},{"url":"https://bugs.launchpad.net/octavia/+bug/2162101","label":"cve@mitre.org"},{"url":"https://bugs.launchpad.net/octavia/+bug/2167565","label":"cve@mitre.org"},{"url":"https://opendev.org/openstack/octavia/commit/cad62902e4984a46ad80cbfa943e90006d8d599d","label":"cve@mitre.org"},{"url":"https://openwall.com/lists/oss-security/2026/09/21/6","label":"cve@mitre.org"},{"url":"https://security.openstack.org/ossa/OSSA-2026-039.html","label":"cve@mitre.org"}],"tags":["nvd","cve.org"],"epss":0.00332,"epssPercentile":0.26588,"cvssSource":"cna","ingestedAt":"2026-09-21T20:52:58.302Z","slug":"CVE-2026-94572","body":"## Overview\n\nIn OpenStack Octavia before 18.0.1, the Amphora provider driver did not validate the listener and pool tls_ciphers field for control characters. The value is written verbatim into the HAProxy configuration generated on the amphora, and thus an authenticated project member who owns a TLS-enabled load balancer can embed a newline and inject arbitrary HAProxy configuration directives. Only deployments using the Amphora provider are affected.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":52,"depthScoreParts":{"impact":51.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}